I want to buy a loupe this week as I have 9,000 35mm slides, shot mostly with a Pentax, and my mum happens to be in the U.S. on a trip, so she can bring it back for me. I also have a Nikon Coolscan, an X-ray light box and occasionally do slideshows when I motivate myself. I would use the loupe partly to determine which slides are worth scanning and partly when I don't feel like doing a slideshow. (I have only a few 35mm negatives.) After research, I realise a Mamiya loupe is excellent but I can't find a single U.S. supplier! The Pentax loupe is available and inexpensive at adorama.com, so I have 3 questions:- 1. For my purposes, do you think the Pentax 5.5X at $80 is good enough? One reviewer said it had pin cushion but others didn't comment on that. 2. I'm curious. Why does Adorama sell the Pentax 5X - 11X for only $50 when reviewers say it is not so good and everyone else seems to sell it at a much higher price than the 5.5X? The pictures seem to show that the 5.5X has a lot more glass. $50 is a bargain. Incidentally, the U.K. prices for these Pentax loupes are about 2 to 4 times(!) more expensive, which is crazy. 3. Any better suggestions, assuming available stock. Thanks for any advice.