Why should I choose RB5 over B4

[DaveG28]

Thread Hijack time: if any of you noob rb5 lovers go ahead and have a b4 for sale let me know! Not saying the b4 is better, never run one, but I already have the spares from the S2 and just need something to tide me over!

On the RB5, ran one for 6 months when they first came out, really well put together, good over jumps even then, and easy to drive! My only issue was lack of turn in on slippy stuff, but I never played around with setup enough to give it justice!