I ask because I have used:
-IPB 1.3 hosts and the 2.3.1 demo (Not bad, but not my thing)
-MyBB 1.4 (Was a beta tester - TOO MANY image marcos!)
-XMB (It was OK, but I think UseBB has more potential).
And I have made themes for IPB, and MyBB.
But UseBB looks as if it does have that many custom images.
I mean yeah, I can make buttons, bars, and many other forum images....But to be honest, it's quite a pain!
Plus, I agree with UseBB being pure.