A bit late to the discussion, but I thought it won't hurt sharing my experiences with HEQ5.
I had it for a year or two when I was starting off with imaging, and later upgraded to AZEQ6. A good, affordable and easy to set up mount and my experience with it was positive, so much that recently I have been considering getting another one just for visual astronomy, but I would be putting it on my Berlebach tripod. I used the mount with a 6" F/8 Newtonian and a 4" doublet. Tracked well with both scopes. Fit and finish is...good enough for the the mount to do its job.
Here is one of my images taken with HEQ5 some years ago:
https://www.astrobin.com/full/141358...ist_page=2&nc=