Why should I choose RB5 over B4

[Chrislong]

I currently have a B4 and like it. But I do like the look of the RB5.

What I like from a car is it to generate plenty of drive, my favourite 2wd is the Losi BK2. Ive also liked the B3 more so than the B4. I am running the B4 with 4 degree of Anti-squat and it seems to suit me like this.

But I just fancy a change, and wonderring, who can persuade me either way... ... do I, or don't I.

Chris