I ran a B44 last season and just couldn't get on with it. Since switching to the FS2, the difference is night and day. For me, it jumps, corners and take the bumps much better.
That's not to say the B44.1 isn't fast - clearly, in the right hands it is very, very fast.
The FS2 is not cheap though (either to buy or in spares) and I do think it is a bit fragile - shock towers especially.
HTH
