Good advice from AI.
Also, look at what you LHS stocks parts for. It's no fun, if you keep having to wait a week or 2 for a $2 part. Maybe consider buying 1-2 used here, or on eBay, as a new car price, might allow 2 used cars.
From your original post, you said "side exhaust format"
If you mean side-exhaust engine, that's not a good spec to choose from. If you meant side-exhaust car, well, they all are. Mostly left, Ofna CD-3, Kyosho FW's are right-side exhaust.
Plus, you never mentioned what you wanted to do: Parking lot racing, groomed track racing, etc... It is very important.
I'll give you MY opinions, from personal use:
Kyosho FW-05T/R/RR - T is a nice starter, but it's REALLY basic. Parts will probably be hard to find, unless you're REALY lucky and have an LHS that likes Kyosho. I have an 05T, and 2 RR's, and I love 'em, but parts are a real b!tch.
Associated NTC3 - Nice option, available in a few levels, alot of aftermarket support, used chassis' available, pretty fast out of the box.
MTX3/MTX4/705/710/V1 - these are all race-spec cars, and if you are parking-lot bashing, they are not the best choice.
There's alot of knowledge on here, and alot available for the asking - go ahead and ask.
Old-school trader fb at http://www.rctech.net/forum/showthread.php?t=101926