I purchased one. Fantastic. Actually wrote a review on my blog and am in the process of a more detailed "usage" post; https://allaspectsphotography.wordpress.com I am extremely pleased with it. I purchased via eBay. Price was steep but I'd just acquired a 5x7 and it through me for a loop in my 4x5 world. Shipping, quality and performance are excellent. I develop in PMK Pyro and was a bit concerned but just followed the directions and my "standard" process. I did not invert rather I just did two full rotations every 15 seconds. Perfect results. No issues. The only tip I'd put out is that when you do load your sheets, make sure they are pushed beyond the vertical bar and snap in behind it. Otherwise, when you spin, a sheet can just slip right out (happened to me) and it'll end up pasting itself against the side of the tank...you can imagine the outcome. I wouldn't hesitate to recommend this.