I've had gear flying in and out of my house this past month..
it started Arcam AV8/P7
then went to AV8 / Krell 2250
then.. Krell Showcase / Krell 2250
and now Krell Showcase / Levinson 331
The showcase and the AV8 sound both sound very good.. but the Showcase is more in your face and I felt it got the best bang for the buck.. The Krell 2250 blew away the P4 in terms of power, but the 2250 was too bright, especially when paired with the b&w's. The Levinson is the most accurate, detailed amp I have ever heard.. They say once you've heard a Levinson you don't go back, well I think that may be true.. I'd eventually like to dump the Showcase for a Levinson No.40, but with a $30K price tag, it will probably be quite a while.