I'd had the PhotoPost product for a short time, just a couple weeks. It has integrated well with our VB 4 forum. The photo uploads have been very easy for people to understand (I had a couple people test and I had good feedback).
The level of support in the forum has been excellent. They have been very prompt in their replies to all questions.
I feel it is a great addition to the VB platform, and I am glad I purchased it. I also have a Invision forum, using their Photo gallery product; and PhotoPost is much nicer. It looks nicer, has many more functions and most importantly of all is easier for people to understand how to use. (lots of people can't figure out how to use the Invision gallery)