So I've used zor.com a couple time now and overall I'm very happy with the service and the quality of the prints.
The Order process is very easy but it appears you cannot upload more then one picture at a time, I tried this and it kind of screwed up my order, I take responsibility for this. The screwup was fixed very quickly by Johnathen as I'd noticed it just before the pictures went to print. The price point is extremely competitive when compared to other print makers, this could be down to the fact that they only offer 3 types of prints.
ICC profile, Zor do have an ICC profile for soft proofing your print, I highly recommend you use it. There is a blog post on the website telling you how to use it. Just make sure you use the right profile for the type of print.
Speed of delivery, I guess they've become rather busy as turn around is about 10 days so if you need the prints fast then maybe look elsewhere. I'm happy with 10 days, my prints came quicker though. Delivery price is very reasonable and they use DPD. Talking of DPD, I've always had great service from them but they screwed up my last order, arrived 5 days late and to the wrong address. It was supposed to be delivered to a DPD parcelshop, it wasn't, and arrived at my door, luckly I was in. None of that is any fault of Zor.com
So I'm very happy with the service and print quality from Zor.com. I now have an aluminium and 2 acrylic prints. Would love to hear other you thoughts on your experience.