Well I took the plunge and got V6 for 1/2 price, plus a few items of $1 clothes. V6 seems to work well in Poser with the latest importer. Existing V4 hair, both prop and conforming seems to work with minimal adjustment. Several items of V4 clothes I previously tediously converted to V5 also seem to work on V6 with minimal adjustment. I cannot get the fitting room to work with V6 though, as yet.