I've had a Spectre pass through my hands, and they are fantastic bats, pick up so well for the shape and weight and respond excellently.
I've also had 2 B3 Stripe 1s pass through my hand, and watched one of them help my mate score a nice 80, and the other one is even more responsive IMO. It will be interesting to see how a Crown one compares!
I've never seen a BB, but I've had plenty of bats from the same bat maker, who is one of the best in the UK. No doubt, from all the feedback on the forum, that the BB boys will look after you.
Personally, I wouldn't go for a laminate, as they are banned. If you have a big budget, then I would be tempted to go for a B3 Crown. If you use a 2.9+, and the Beserker ST is the best bat you've ever used, I would actually seriously consider contacting Jake at Vitas to get one of these instead, and spend the rest of the money on some coaching or other gear:
http://custombats.co.uk/cbforum/index.php?topic=30047.0IMO, that ST profile is even better than the Hammer one, simply because there is no concaving whatsoever on them. I purchased one from Asad, which is ridiculously good. You just have to let the bat drop on half volleys to get some serious punch behind the ball, really top quality bats.