I haven't had a B4. I have a 201 and I am over the moon with it
So I of course I would say get one as they are fantastic. I usually run 4wd with my DB01R so my 201 is the first proper 2wd and it is competative straight from the box...
I could praise this car all day, I have been racing it nearly two months now. Massively impressed
You really do need to get one