After much deliberation and comparison with much more expensive alternatives, I opted for the Green Magic (Sign-Holders.co.uk) poster frames and couldn't be happier. I ordered one-sheet, quad and maxi sized poster frames - all in black. They look and feel very high quality and option of gloss/ matt poster protector is great. I opted for the matt finish. I attached the larger frames to my walls using 3M command strips (instead of the supplied fixings) and they feel very secure. I will be buying more as my poster collection increases and thoroughly recommend to any like-minded poster collector.