who is running 250 watt, Iwasaki 6500K bulbs

[StirCrazy]

ok I am looking at buying two 250 watt, Iwasaki 6500K bulbs, now from what I have been reading the MT250DL/BH-E39/41 runs best on a MV ballast and the MT250DL/BH-E39/41"R" runs best on the MH ballast. now I can get the non "R" for about 80 to 90 bucks a bulb so I am thinking of going with this one but I need to know which MV ballast to use and do I need to do anything else to it?

please corect me if my assumptions on the bulbs are wrong as all the info I have been finding is vauge and you kinda have to read between the lines.. the best thing would be to hear from some one running the non "R" bulbs on a MV ballast.

Steve