I've been looking at these for probably 6 months, but finally decided to bit the bullet and buy one. As anyone who shoots medium format film and uses an Epson scanner probably knows, the Epson stock holders are terrible. If your film isn't perfectly flat it can be a struggle to get the film in the holder in the first place-much less keep it flat. Before buying my Epson, I used a Canon 2400F, and although the Epson is a better scanner for me in most ways I have to say that the Canon MF holder is in every way. In addition, sometimes the focus isn't perfect and the Epson holders only allow you to set it in fairly large steps-it's often a matter of "good enough." The Better Scanning holder does a lot to address these concerns. First of all, rather than using a frame to lock the entire strip in place, the BS holder uses "T locks"(basically little plastic bridges) that snap into place in the film guides. I put one between each frame.They hold it securely, and by paying attention to the exact nature of the curl and cupping they can be used to hold the film flat. Second, rather than using fixed-sized ships the BS holder uses hex headed nylon screws to set the height. This allows you to dial in the exact focus. I spent a while on this last night, but it was well worth it-basically I used a strip of Tri-X and judged it both by some writing in the frame and how well resolved the grain was. I used 3200x3200 to dial it in since-in my experience-that's enough to grain resolve Tri-X and it minimizes the scanning time. This isn't the exact procedure described, but here's how I went about setting it up. First of all, with the screws flush, the scan height is 1.5mm. Each full turn of the screws is .8mm. Since my initial scan was terrible, I went ahead and raised it by a full turn. It was much better, so I went another half turn and saw even more improvement. A third 1/2 turn made things worse. I then made progressively smaller adjustments(moving to 1/4 turns and then 1/8 turns) until I had it as good as I thought I could get it. I'll also add that the screws have a hex head and an appropriately sized allen key is included to make exact adjustments. They can also be done with the holder still on the scanner bed. I opted to buy a glass insert(anti-Newton glass) which I haven't tested yet. I THINK that you have to specify this at the time of order so that the holder can be made to accomodate the glass even if you don't buy the glass at that time. The instructions for the glass insert deal with extreme cases of curl, and even describe taping the film to the glass. As someone who still shoots quite a bit of MF, I think the holder was well worth the investment. It's not cheap, but in every way it's better. I'll also add that holders are available for 35mm and 4x5. Since I use a Nikon Coolscan for 35mm I find the 4x5 holders adequate, I didn't bother with those. These are apparently custom built, and I was told at the time of my order that it would be 4 business days from the time I paid. I ordered on Friday Feb. 9 and the holder was on my porch on the 17th. That's plenty fast in my book. I have no affiliation other than being a happy customer.