best MM cartridge...

great suggestions all! although in current audio evolution the pricey models (>$1k) I can't yet(?) justify. I listen to almost all types of music to varying degrees depending on the mood. From small ensemble jazz to classical to world to flamenco to rock to punk on occassion, etc. I consider my system to be better than mid-fi, maybe even hi-fi! Simaudio I5, Rega Jupiter2000, Joseph Audio RM7 sig, Zu Cable Julian bi-wire and Warmouth IC. Current table is a 'found' Yamaha P220 with unmarked Audio Technica and a cheapo phono pre I picked at a TV repair shop for $25 new. I have an AR ES-1 on the way w/Linn Basik LVX arm and K9 cartridge. So I'm also thinking about phonos in the <$1k range.

Mingles, I started to read that tread but 'lost it' mid-way through! The AT150 is an interesting suggestion, how would it compare to the Linn K9?

thanks to all for your responses!
being an analog newbie, I greatly appreciate everyone's input...

mingles:
actually the cheapo phono was purchased so that I could setup an old yamaha P220 and get reacquainted with what's left of my vinyl collection. In the future I plan to play those thrift store finds on it first to see if the records can be salvaged.
I'm also looking for phono suggestions, that can do both MM/MC. Your right though, that's an excellent suggestion to live with K9 for awhile

Raul:
It seems most of your excellent suggestions for MM cartridges are vintage and difficult to find. I'd rather spend more time searching for and listenning to vintage vinyl. What current production models would you reccommend?
Let's say <$1000, or better yet, <$500...Something I could order online. The only shop nearby (+50 mi.) carries Rega only!