During a drunken convosation, I bought resident evil 4 for the gamecube for the price of two pints of cider having thought that I had sold the version on the wii a while a go (which turned out not to be the case). 
 
So my question is, which is the superior version?

Wii. 

Gamecube version, by far. Because I prefer traditional controls.

Well, judging by your original post, you have both... So why don't you have an opinion on the matter? 
 
I never played it on the Wii because I played it to death on the GCN, but I hear the Wii version is definitive.

Wii. Far better controls, a bunch of bonus content that isn't in the GameCube version, and I think it might even have slightly improved graphics.

I found the Wii version better since the controls allowed you to aim quicker. Still, both are awesome.

PS2! Bam!
 
But to answer the question, GameCube.

Wii version. The controls are a lot tighter and faster, that was my favorite game I've played on the Wii. Whenever you pull up your sights on the gamecube version you'll always be looking kinda down and it takes longer to line up shots.

Aiming with a  wii mote works way better than most people think. Get the wii version.  

The Wii version. You can use the GC controller and the classic controller in addition to the wiimote and nunchuck. The cross-hair will also change according to the control you use. You can' t really go wrong with the wii version, regardless of what type of control you prefer.

I have played every version except for the PS2 one, and I vastly prefer the Wii version. Aside from having ALL of the content, I find the control scheme to be much more effective than the GCN one.
 
Of course, both are totally freaking awesome.

The Wii version is the "Complete" version. Has the graphics of the Gamecube version and the content of the PS2 version. Plus you don't have to use the Wiimote to aim as you can use the Gamecube or Classic Controller.

" Gamecube version, by far. Because I prefer traditional controls. "

Hmm looks like its the Wii version then! 
 
To answer the question why I don't have an opinion on the matter. I forgot all about Resident Evil 4 on the wii till last week and so had no idea which was better.

Wii version. It is the original GC RE4 plus a lot of extra crap from the PS2 version plus the option of Wiimote controls.

I heard the Pc version has the worst controls, however

The Wii version is great. It has all the extra stuff the PS2 version had but also AWESOME controls. My biggest gripe about the game (I hated aiming SO MUCH) and they fixed it.

lol @ Everyone saying the GC version. Wii version HAS GAMECUBE controller support and the extras. You'd have to be an idiot to buy the GCversion if you have a wii.

It depends.  I would say the Wii version.  Graphics are a bit better, letterboxing is now fixed with HDTV's, and better controls.  The only complaint I actually have with the controls is the fact that they get kind of tiring after playing for more than an hour or so.

" lol @ Everyone saying the GC version. Wii version HAS GAMECUBE controller support and the extras. You'd have to be an idiot to buy the GCversion if you have a wii. "

wait for the HD version =D

The Wii version feels really nice.

" wait for the HD version =D "

" The Wii version had all the extras of the PS2 version so that is a plus. I prefer the Gamecube controller and I'm not sure if the Wii version supports it or not. You can't go wrong either way. The game is not as impressive as it once was but it's still superb. "

Z=Run

The game goes alot faster.

If the game gives you a rocket launcher, pick it up! It make those two blind things alot easier.

I've been meaning to get another copy of this and see if I can beat the blind things without leaning on the Z button.

Wii version. I vastly preferred the controls for the Wii. 

It's always the original. It's like the conversations about which version of Street Fighter 2 is the best... it's The World Warrior. Sure they may not be as finely tuned but all the stuff was created for that original release. Anything done after the fact is borrowed and can be considered slightly stale or second hand IMO.

"lol @ Everyone saying the GC version. Wii version HAS GAMECUBE controller support and the extras. You'd have to be an idiot to buy the GCversion if you have a wii. "

The Wii version is (at least, currently) the definitive version. The game is significantly faster-paced with Wii controls and you get all that extra stuff that was on the PS2 version as well.

You're better off just waiting for the PS3 version now.

PS3 (Move Support) > 360 > Wii > PS2 > GC

HEY GUYS! Someone had a question about which version to buy A MONTH AGO, let's bring it back anyway.

I personally prefer the GameCube version... not a huge wii fan.

Completed it on the GC, did only one mission on the Wii at my friends house.

So GameCube.

Wait for either the 360 or PS3 version.

Wii.

I'm not surprised that so many people don't know you can use a Gamecube controller on the Wii version of the game. You have to do something weird like unplug the Wii nunchuk at a certain intro warning screen. If you started without a nunchuk already in, it would tell you to plug the nunchuk in.

Wii, you get additional content.