I'm a Carvin fanatic, although I own other basses too. The reason I prefer Carvins is that the value, measured as a ratio of quality to cost, is second to none.
Carvin, unfortunately, are about a year too late to sell me one of their new P-basses. I just put a Fender P in my stable last year, and I really dig it. Had the Carvin PB series been out then, I almost certainly would have bought one instead. So of course, now I'm thinking I should get a five-string version from Carvin. But I'm gassing for one of their SB5000s much, much harder.
Another bass I own is the Schecter Stiletto Studio 8, an 8-stringer strung in pairs of octaves. This one gets a lot of stage time, but I can definitely imagine something better. The day Carvin releases an 8-stringer, I
will be relegating the Schecter to backup status.
At this point, I'd like to remind my fellow TBers of the "no pics, no bass" rule. Here are my Carvins: