Had a lot of experience with 01vs in the past, we had two in a studio for a couple of years.
Generally, 01v feature wise fantastic, however the converter qualitity wasn't fantastic, overall it added a harsh agressive quality to stuff passing through it. The warmer mixes came off the Ghost.
Not used the newer stuff but I think it's going to come down to the quality of the convertors.
That said if anyone wants an 01v we've got one left that's for sale.