You may want to take a look at transcendent.
http://www.transcendentsound.com/preamp%20kit.htm

There got pretty good user reviews.
http://www.audioreview.com/Preamplifiers/Transcendent%20Sound/PRD_118430_1591crx.aspx

BTW, I have driving my m80ti using a custom built tube preamp (not transcendent though) and a merdian poweramp (SS). The sound is warm and sweet. If you already have a SS amp, maybe you can get a tube preamp and see if you really like the "tube" sound.