What to drive Soundlab Prima speakers with?


I am currently using a Llano Trinity 200 to power a pair of Soundlab Prima speakers and find that the bass just isn't what I think it should be.  Just a little background:  I had a Llano Trinity 300 that was driving Soundlab Quantum speakers and it sounded amazing.  Trinity 300 was damaged beyond repair (long story) and I switched to my Trinity 200 to drive the Quantum speakers and it sounded great.  Fast forward to today:  I picked up a pair of Prima speakers after I listened to them being driven by Joule-Electra VZN-100 OTL Amps.  As you can guess, I was blown away by them compared to the Quantums.  
So my main question is what to drive the Prima speakers with that won't break the bank?  I was thinking a pair of Adcom 555 II amps each bridged.  Are there any other monoblocks out there that aren't big money?  I wanted to stay under $2k if possible.  I know that isn't much, but we just moved, spent a ton of cash fixing the previous house and buying furniture for the new house.
TIA for your input!
rev_crt
Sound Labs have often been the match made in heaven with OTLs.  The Prima is a model I've not heard of- its not on their website. Can you tell me more about it?
They are part of the Soundlab Millennium series.  And they replaced the A-4. Here are a link for more info:
http://www.audiocircuit.com/Home-Audio/Sound-Lab/PRIMA

I'll see if I can dig up some more.



Thanks! The first thing I would do is contact Sound Lab and see if there is an updated backplate for the speaker. If so its likely that the new backplate will make the speaker a lot easier to drive and will widen the available amplifier candidates.

The backplate had a big effect on the larger Sound Labs like the A-1. What took 200 watts before went to about 100 watts with better sound overall because the speaker is also an easier impedance.