My favorite MM is the Grace F9E. Even in it's stock, original form it sounds better to me than any of the Shures, but with the SoundSmith $250 retip, it's the best MM I have ever heard.
Mofi -- Was that with the ruby or non-ruby cantilever? I've had both (one F9 body plus one of each type of stylus/cantilever assembly) sitting in my closet for a long time, and I've been thinking of having the SoundSmith retip done to one of them.
Axel -- I'm currently using a Grado Reference Sonata, high output version ($500). I've been happy with it, and it has been well reviewed. As best as I can recall, its sound is not particularly dis-similar to the Grace, although there was a gap of some years between my use of the two cartridges, so I can't say too specifically. Be aware, though, if you are not, that Grado's are not well shielded, and will hum on some turntables.
Regards,
-- Al