What kind of bag & board should I pick up?

I'm running low on my Midtown Comics Current-Size Bag & Board and was wondering what do you goes use as backings and covers for your comics? Let me know, cause I usually purchase comic supplies directly from their site, Amazon.com, or local shops around my area.

I really like the Midtown Comics bags. That self-adhesive strip is great, making the need for tape a thing of the past.