Newbie here. I have a VPI Prime Signature w/ a JMW 10 #D Unipivot I purchased over the summer. Started w/ a DynaV 20x2 and didn't care for that and found a VDH Crimson w/ 200 hours (and sent back to VDH for checkup) and that was a revelation. Wow.
Sadly, it only took me 3 weeks to snap off the cant and had to send it back to AJ. I didn't know how long it would take so I bought a HANA Red for the wait. After that was broken in - wow again. I don't have the ear many of you have for nuances and they sound very close to me. Had the Red on for about 75 hours or so and somehow it got loosened up so I just put the Crimson on last w/e to see if I could tell a difference. A little but not much and it wasn't broken. The Crimson now has about 20 hours on it and even w/ that little bit it is now sounding the same as the HANA - mostly. I think for me to really be able to tell the difference I will need to let the Crimson fully breakin (whenever that is) and then go back to the Red again.
I have no idea which one I will use "full-time" and which one will be the "backup". I'll probably buy another arm at some point so I can switch back and forth quickly.
Btw, the service from VDH was great and pricing was reasonable.