Recommendations for a new integrated amp for Vandersteen 3a speakers

denman and twoleftears, thanks for the Belles suggestion. i will talk to Audio Connection about the matchup with my Vandys.  Also, yogiboy thanks for Sphinx suggestion. I am a little worried that 100wpc may not be enough to bring out the full potential of the Vandersteens.  Anyone have experience with these speakers and good amp pairings? I don't really listen loud (hardly ever up to 100db peaks) but am more interested in having  them sound realy clean and unrestrained at normal listening levels in the 82-90 db range.

Thanks to everyone for the good advice.  I will definitely consider  finding a pair of 3a sigs as part of the upgrade path that will yield the highest impact.  Also, will try and find a used Belles to consider. As background- I lost out on a bid for a Cronus Magnum to try and was considering a Mcintosh Mc2120 but decided i would rather find something newer in my price range.  I borrowed a friends Bryston 2b to see how it compared to my NAD 2100 and couldn't really tell a difference.  Also i do have a SVS SB-1000 hooked up which definitely enhances the base performance-so any suggestinos for integrateds that can take advantage of that are appreciated.
Lastly, does anyone think i should keep the adcom preamp in the system and just get a better amp? Or will it simply limit the performance of whatever amp i hook it up with?

Thanks for all the responses.  I am going to try a Plinius 8200 integrated amp that has been recently modded by Galbo Design.  Will let everyone know how it worked out once it arrives.