Newsed int amp - Creek, Music Hall, Linn?

Hi. My current system is:
http://tinyurl.com/kjfstereo

I'm considering replacing my Cambridge Audio Azur 340A due to a combination of sonic and aesthetic reasons, as follows:

* On some music, the Cambridge Audio Azur 340A sounds a tad bright and is tiring. I like it a lot with jazz and some pop, but on alternative (REM, Cure, ...) it sounds bright.

* The old school Pioneer tuner and Onix CD player look cool. The 340A is a bit too subdued next to them.

I am following some used equipment like Creek 5050, Creek 4330, Music Hall A25.2, and Linn Majik-1. Only the Music Hall is appealing aesthetically, but I have no idea of the sound.

Any advice on which of these or any other to get. I'd like to stay under $500 but can be persuaded otherwise.

Thanks in advance,
Keith