Im new to 1/8 scale buggies and I am looking to get into it as inexpensivly as possible. I am not however new to r/c(racing on and off since 85). I am looking for a buggy so when I race this summer I have more than one class to run. I have a XXX-NT but turn out is low everywhere so off to ebay it goes. What I want to know is whats the difference between the 5000+ variations of OFNA buggies, Ultra, LX, MBX, Comp, 9.5, Hyper7, Hyper7 PBS, Hyper7 PCR, Hyper Pro? All seem to be available as kits/rtr/arr. Im tying to stay under $400.00 so my wife doesnt kill me, she doesnt know about the chassis/diff/brakes/3.3.arms etc I just backorderd for my Revo yesterday