Another tire question

[96Saleen]

Looks like I started some controversy regarding my last post (Tire Size question). This is a different question on the same subject (tires).

I talked to my brother's buddy this past weekend and told him that I'm getting new tires for my 'Stang (2002). I mentioned that I like to get 275/40s all the way around. He said to do the following: Get 245s for the fronts and 275s for the rears. This guy has been drag racing for 10 years and road racing for 12 years so I think he's a pretty good source for information.

So, my question:

How should I set my tires up?
a) Get 275s (or the max. width) on all 4 tires or...
b) Get 245s in the front and 275s in the rear

What are the advantages and disadvantages of each?

Plus, what's a good yet INEXPENSIVE tire? I've seen pretty good reviews on the Kumhos or Sumitomos (reviews.stangnet.com).

Thanks!