Playing Forza with the racing wheel has been one of the greatest gaming experiences ever.  I think that anyone who tries it would decide they prefer it over a controller.  It may not be as precise as using a controller, but the feel and fun factors the wheel provides is unreal.  
 
Who else out there is using a wheel??

" It may not be as precise as using a controller... "

I use a controller for the same reason as PsEG, unless your going to do a little work for the wheel to be stable it just doesn't look like it would feel right.

I bought a Logitech Driving Force Pro when Gran Turismo 4 came out, but I didn't have anything to mount it to, so I had to use this attachment that basically had you anchor the wheel between your thighs for stability. It just wasn't stable enough or in a comfortable position, so after a few days I went back to a controller and its been sitting in my closet ever since. I really think I need some type of racing seat to get any enjoyment out of a wheel, but that's a hefty investment, and I'd rather just spend that money on other things. A controller is good enough for me.

i use a controller. i want to get a racing wheel but never really looked into it.

I want one of the Fanatec Porsche wheels SO BAD D:

I use the MS wheel, while it may not make the game any easier, it might even make it slightly more difficult. I find it increases the enjoyment of the game tenfold, you can feel the car trying to break loose, the force feedback does a remarkably good job at telling you what the wheels are doing. If I try and use the controller now I fail miserably, I react too slowly to what the car is doing as I can't feel it.

Wheel. I even bought Forza 3 on release, and didn't touch it until after Christmas, because I had to bring my wheel up from back home.

As for setup, i just use my pc chair and a table, you have to have it bolted to something solid.

And my next project now is to get a wheel with clutch, does anyone now any other than the crazy germans of fanatec who makes that for xbox? Logitech does for some reason only make theirs for ps3. (Though they make "regular" wheels for xbox)

I'd love to have a wheel, I like them much better. For now, I'm just using the controller.

I really want to get a wheel for this game; can someone list the wheels, prices, and final recommendations?

I want the wheel so bad, but I just can't justify spending one hundred extra dollars on a single game.  

I use a controller as I have for decades. I would be interested in what it would feel like to drive with a wheel. Because I started driving games on a D-pad with only on/off functionality, I use a duty cycle method with the analog sticks; sort of a tap-tap-tap in whatever direction I'm turning. 
 
Does anyone use analog sticks on a controller and NOT do the above (i.e. smoothly use the analog sticks)?

" I want the wheel so bad, but I just can't justify spending one hundred extra dollars on a single game.   "

" I use a controller as I have for decades. I would be interested in what it would feel like to drive with a wheel. Because I started driving games on a D-pad with only on/off functionality, I use a duty cycle method with the analog sticks; sort of a tap-tap-tap in whatever direction I'm turning.  Does anyone use analog sticks on a controller and NOT do the above (i.e. smoothly use the analog sticks)? "

I'm getting a wheel when GT5 comes out.

I have switched to a wheel, and for Simulation racing I don't think I could return to the controller.

I use the wheel all the time. When you start racing the faster cars like R2, R1, X, you just can't get the precision you need to be smooth and fast from a controller. That said - The Xbox wheel does sit at an arkward angle and WAY too high. I usually chuck a block under the front of it to angle it down, and I have to lift my screen up about 6 inches because this xbox wheel sits high.
 
Although it's a pain to set up, I think  anyone saying the controller is just as fast is absurd. There is no way that you will be as fast with a controller as you can be on a steering wheel, with enough practice.

I wish I had a wheel, but I can't spend all that money on one.

My hands, once Kinect is released. Joke, seriously I'm joking

I use a controller because I can't find a reasonably priced wheel with a clutch and shifter. I could even deal with clutch and paddle shifts...

" I use a controller because I can't find a reasonably priced wheel with a clutch and shifter. I could even deal with clutch and paddle shifts... "

I think it would be really cool to try out with a wheel, i'm just not interested enough to spend that kind of money on it. So i'll stick with a controller for now.