flex's dont have the spring rate or damping for competition if you want to be competitive.

flt a2's are great 8/6 stock which are good for lots of minor competition and drift competition, the same goes for a TEIN HE. the flt a2 is a little bit higher quality but the tein's are by far the best for the money

you can also get flt a2s in 10/8 which is like hello and welcome to you dont want to drive this onthe street through los angeles in down town or chicago, you will die ahha

honestly, for occasionsl stuffs like autox and what not flexs will do fine, i agree with john they have a nice valveing and spring matching

tein he's if you want to raise the bet

flt a2s are wonderful but many more moneys ( like 600 worth more moneys)

flex is king of street