Watching the Diner Dash QuickLook, reading about the game, and played demo has all made me want to buy this game. 
 
However, I can't shake the niggling feeling that there are other, better XBLA games I could be getting for 800 points. Are there? If I get Diner Dash will I actually enjoy it? 
 
Please help me, oh knowledgeable, wise, and abnormally attractive GB community.

I don't really like games that stress me, but if you're into that.. go for it, I guess.

The game looks lame, I will stick with Order Up! on Wii which is by far the better looking game

There are a trillion clones of the gameplay, and a lot of them are free on flash sites. 
 
   Sally's Spa for example I played until I got bored one day. 0 dollars.

" The game looks lame, I will stick with Order Up! on Wii which is by far the better looking game "

Diner Dash is a lot of fun for some people, but there are better games on XBLA.  
@JoeOE18: I don't know what the point values for my XBLA games are, but each of them are great 
Castle Crashers 
Shadow Complex 
Virtual on 
Castlevania: Symphony of the Night (this one might be 800)
Marvel VS Capcom 2 
Ikaruga 
Super Street Fighter Two High Definition Remix

I'm a fan of all of these sorts of games.  I just bought this for the PS3, and I'm sad to see that virtually no one plays the online multiplayer.  For a chance to sit comfortably on the couch and play this on a big screen, I was all about paying $9.99.  There is a nice little number of trophies/achievements to be earned as well.