Ok, so consider this: I will speak of what I own not just because I own it but have used enough other gear to make an educated comparison. All of the gear that's being talked about in this thread have 1 thing in common...they are either a 1way or a 2way configuration. To me, there is really way too much frequency loss/wash between the size of a 10 or a 12 and a tweeter. The cabs I use are LoPhat. Aside from them being very light, they are true 3way cabs with attinuators for both the mid driver and the tweeter. What this will give you is numerous different configurations in 1 cab. For example: when I am on a blues/rock gig with a P-Bass and want the old school sound, I roll off the tweeter and the mid and just have woofers. When I'm wanting the more Hi-Fi sound (Eden/SWR) I can use the 2way setup...woofer/tweeter. Here's where it gets interesting: I play 6-string alot and with most of the 2way boxes I've used in order to get a crisp high end response the tweeter can have that 'cut your head off' kind of sound. The 3way box fixes that by allowing you to roll the tweeter back and the mid driver up a bit so your notes are crystal clear without being 'brittle'.
The part I like the most is you are able to do all of this with NO CHANGE TO YOUR EQ!!!!! This way you are not getting annoying frequencies based on room size/construction of stage/surrounding room materials (glass/concrete) but you are still able to tailor the cab to your liking.
Just a little something for you to keep in mind while shopping.
I also noticed that Toby mentioned me as being LOCAL. Are you in the Oregon/Washington area? If so I would be willing to hook up with you and your bass and let you check them out. I am also using Carvin amps (BX1500). Just PM me and we can work something out.