Digital Amp's


Hi All,
I was wondering what everyone thinks of the newer Digital Amps that are becoming more common. I think these Amps are known as Class D amps. Belcanto is one company that seems to be pushing this line, but most seem to be coming from the giants like yamaha and panasonic.

What are the pros and cons of these AMP's over your everyday Class A/AB amp?
Any recommendations or condemnations for digital amps?

Thanks in Advance
dlite
I have tried the PS Audio HCA-2 and recently Channel Island D-100 Both excellent amps but like Audioengr give me a Class A SS amp.
Third Audioengr's comments. Also they are really fussy about getting clean power. I could not run my PS Audio through my Tripp-Lite surge protector - even with dedicated line. But for good sound on the cheap, not bad.
I own a modified Tact 2150.
Best amp i heard period.
I owned amps from Pass, Classé, GamuT, Conrad Johnson and heard a lot of amps (i work in the hifi... and don't sell Tact unfortunately), the stock 2150 is already great but once modified (diodes, BG, high quality regulators) no amp can touch him below 10K$.
If you want a polite sound get a class A amp. If your liking is more towards "real" get the ICE powered H2O Signature.
Audioengineer and the others,
I value high frequency extension, dynamics and realism.
Any examples of Class A SS amps that you're referring to that are better than the ICE power amps?
Thanks,
Bill