My overall experience has been good. There are some headaches from time to time but that isn't any different from other kinds of prints.
I've found that the rhinotech papers are significantly better than any I've found for printing in darks. I've tried the "Wow" line (was a disaster, couldn't get a single good print), and I've tried Magic Touch (decent results, not great, but admittedly much less expensive).
As for photos, I've not tried them. I can tell you that the headaches I've had have all circled around light pastels, particularly those in the blue and light tan range. The marry process simply won't adhere to these colors ... Has something to do with the density of that color range. Whites, though, particularly with the rhinotech paper, couldn't look any better, even screen printed.
Durability on black, again with the rhinotech paper, has been excellent.
Only wish would be that the pricing could go down a bit. It works out to be about $4 per print for the paper alone (buying 100 sheets at a time) which is about 35% higher than the other laser dark papers, so if you're in any kind of competition with someone, you've got to spend the time showing the quality difference. And that is something that many prospective customers don't want to listen to.