Upgrading Integrated Amplifier - Musical Fidelity?


Hey guys, I need some input as I have an old trusty onkyo 9555 integrated but want step up in sound quality. I am looking at the Musical Fidelity m2si but do not know much about the Musical Fidelity line or sound signature. I like a warmer sounding amp and not too clinical. Looking for some suggestions in the $400-$600 range. 
apstoltz
I dislike Musical Fidelity and find their stuff hardly sounds warm.  Cambridge is better but again, not warm. Try Marantz.
Creek is coming out with newer higher end gear.  They will unveil it at the Bristol Audio show coming up this week

Musical Fidelity jumped the shark years ago.

With the new Creek releases that will depress the prices of their previous generation integrateds, making them fall within your budget.

My NAD 7020 has been acting up so I decided to retire it. I settled on the Marantz PM6006, but after about a solid week of burn in it still sounded horrible to me and I returned it.  I just ordered a Cambridge Audio Topaz SR 20 and hope it sounds more to my liking. If that doesn’t work, I might try Creek or just get my NAD serviced. 
There is a used Yahama A-S501 for sale here on AG. Has Phono and digital inputs as well as sub out.