[u]EDIT! I was not playing through a Big Baby 2, I was playing through a Big Twin 2![/u]
I put my Matamp GT200 through Alex's [s]BB2[/s] BT2 at last years SE Bash. I was aided and abetted by 51mon who also gave me help with my compression, so all was flowing. I've never had a cab with a tweeter before and Si dialed in just the right amount of top for me. It gave a freedom like a good blow of the nose. The cab feels like it is breathing with nice clear air-ways.
I've heard people say Barefaced are Hi-Fi, but I think they don't colour the sound in any way, if that's Hi-Fi then so be it. So what I was hearing was 100% amp and bass. So if you've got good gear, it sounds f'ing ace. But, you may see why some classic sounds are much a part of the cab as head (take Ampegs' 810 for instance).
I usually run the GT200 with a Matamp 212 with Celestion ferrite drivers. When you get the cab cooking it sounds lovely with a nice thump in the guts. But the Ferrite's are heavy lumps and it feels like as much energy is used moving the magnets as making sound. The BF does not have this lag and the response is quicker. But the 212 adds a colouration that the BF does not.
Don't let anyone kid you that these cabs are flimsy from being light weight, or not loud or something. For larks we got things stupid loud, as in everything turned up full, vol, drive, the lot. And the BF did not miss a beat as the school hall windows were blown out.
I went to the bash specifically wanting to try Jack's 69'er. I A-B'd it with my Mat 212 and couldn't put a fag paper between the two of them.
I came away wanting a BF [s]BB2[/s] BT2