I will be doing duplications from mini dv to vhs, is there really a difference in quality between the different vhs tapes being marketed such as:
master, high grade, broadcast, professional, bulk, bulk professional ect.
any imput would be appreciated, trying to achieve best playback quality with this vhs format.

I use Fuji Pro for copies and Fuji Master for master copies. Yes there is a difference in quality (and price).

We use Fuji bulk dubbing stock and have had no problems. The difference in tape stock isn't going to affect the image appreciably, but the better the tape, the longer it will last through multiple playings.