I also have a VPI HW19 MK 3, and it has served me very well for a long time. Years back, it was mounted with the SME V tonearm, which I also greatly enjoyed. After wanderlust led me to try several other highly regarded arms, I returned to an SME, but this time it was the IV.Vi, which I've since lived with and never had a desire to stray from. Soundwise, I believe it is slightly better balanced than the V from top to bottom. This might have something to do with its different internal wiring compared with the V. Nevertheless, I consider both SMEs to be extremely satisfying. I've never tried any of the Graham arms, so I can't comment on them. I too am using a Dynavector cartridge---the XV-1S. It seems to form a solid synergy with the SME/VPI combo.
