I have the zx-5 sp (kit) and love it. I have not had a buggy since 1986 rc10 gold pan and all i can say is WOW they have come a long way!

Are you going to be racing or just bashing it? if just a basher I high recommend the zx-5 as it does not require saddle packs. and with BL and Lipo it balances nicely. if anything I am biased a bit to the motor side on 2s, 3s is abut perfect but unwieldy fast.

and parts are easy for the kyosho, just getting them local is a pain.