Placing High Grade Coins In Albums

1. Most of my collection is stored with individual coins in cardboard / Mylar 2x2's, in 20 pocket archival quality Mylar 20 pocket album pages.

If you are building a date or type set across denominations in a pre printed album, my approach does not work well for that cohort of collectors.
If all of your coins are MS or above, the approach I have used may work a little better, if you use a labelling machine for your 2x2's, to obtain a neater result.

2. I have never used push-in hole type albums for sets of coins, even with the use of gloves.
3. Albums that have sliding windows can be a problem if there is any dust that is electrostatically attracted to the underside of the sliding window, which can hairline the coins.
I have used albums types 2 and 3 in the past, and have discarded both types.

Any handling should be accomplished with good quality white cotton gloves. Be sure not to sneeze, and don't eat/drink in close proximity to your work. The 2x2 solutions noted above are good. In my opinion, carefully placing coins in a quality album is okay too. Also important is the overall environment in which the coins are stored--either albums or 2x2 pocket pages. High humidity, wide swings in temperatures, prolonged exposure to chemicals/substances and direct sunlight, etc. can create issues. Consider what storage challenges come with garages, basements, attics, kitchens, laundry rooms, etc.

It is an album, with both sides of the coin visible. This was very helpful, so thank you to all who contributed.

I like lighthouse coin albums with airtite capsules. You don't have to worry about the sliding plastic across the coin. They are more expensive but I think they are the best I've found for preservation and display.