Has anyone ever used these pages? Looks like the answer to years of looking for professional looking chip storage/display pages.

http://www.jpscorner.com/coin-capsule-pocket-page-albums.html

What is the right airtight size for chips? A 15 insert page (1.75" or 44.45mm) or a 20 insert page (2.03" or 51.59mm)?
Thanks in advance for any input about this business or this product.
Eric