not much experience w/recent hi-output coils - an old sumiko blue-point was used prior to my ortofon. if ya awreddy have that bps, i'd use it 'til a nice lo-hrs hi-end cartridge comes awailable on the used market. (there's a transfiguration here on a-gon, dunno its output). also, ortofon has nice hi-output mc's - dunno the specific model #'s/prices, but yule find some at the needle dr. i tink ortofon cartridges are really nice, even their m/m's...
re: sz hedders, i got in on a bulk order w/giovanni rizzo last year, mite wanna contact him for details. stebro *is* nice, i was so glad when the prewious exhaust finally went away... :>)
re: oracle mods, mine was an original (mk-l?), bought used from a dealer in quebec. i had all the mk-v mods done, except for the motor, as described above. my total cost, which included the 'table, a gnu box for shipping to maryland, a grace tonearm, & shipping, was $1250. perhaps i got a better deal cuz the dealer was across-town from the mfr. if yer upgrade cost includes the motor/power-supply as well, that seems pretty reasonable, but as a cheapskate, i have to recommend the o-l motor/power-supply! :>) good luck, doug s.