I'm no pro, and what limited studio experience I have is me playing my music, on my dime, my time. To further make the point that I'm talking out of my rear end, I don't think I've recorded on anything but an Alembic (or RT Renaissance) since high school, so I really have no basses (heh) for comparison.
Having said all that, I think Alembics are pretty incredible for an amateur hack like me, because I can go direct into anything and it sounds great, like an Alembic. I go right into the board, or audio interface as the case may be, and I have total control over the bass from the bass. And it always sounds great (the tone, that is. The playing is another story). The less stuff between the bass and the tape the better, for me anyway. The engineers I've worked with have all thanked me for making things easier, giving them more time to make sure the drummer's 18 mics are all in the perfect spot, and the guitar player has the right combination of vintage tube, modern solid-state, mic'ed, direct, dry, wet, whatever.
Same with live- playing in NYC, where you never know what backline you're gonna find, it's so great to have a bass where I can just set everything flat on the head, turn the eq off, whatever, and the bass is gonna be alright. Gives me more time at the bar.