Depends on what you're after. They all have 4 wheel independent suspension these days. I'm partial to Tamiya's TT-01 kit... because it's cheap, strong, shaft drive, and can be built a million different ways, from sedan to drifter to rally car. Parts are plentiful, and also cheap (seriously found an entire rebuild kit which was about 70% of an entire kit for $10 at the hobby store). I also have an 18MT which IS a monster truck..persay, but the chassis itself is about the size of my hand, and it's a tire swap away from being any of the other 18th scale kits Team Associated offers. Last but not least, I do have a pair of stadium trucks. I have a Team Associated t4 Factory Team (it's a clone of their team trucks, CF/Graphite everything, aluminum shocks, the whole bit) and a Traxxas Rustler with a VXL/Brushless conversion. The Traxxas is about as strong a truck as I've ever run into (Seriously, it was only after a 60mph roll into a curb that I finally broke it) and it's FAST. Probably too fast for beginners, but the ECU in it can be tuned to limit power. Other things to consider
Your radio. I have several, all AM/FM whatever they are with the crystals. These are pointless nowadays. I recently picked up a Spektrum DX3C for like 100$ @ the hobby store. Can store 21 cars worth of recievers, does 3 channels, stores settings and everything. Is the cats ass. I'd go with that.