Re: Glass Bed
I'm with Wardjr on using hairspray to keep the glass plate down. I just spray a little on the original print bed. put the glass (or mirror in my case) down then let the bed heater dry and set the hairspray. It never goes anywhere and with only a small amount of spray it makes taking the bed off very easy.
Keeping on my "all things Ikea" thought process (that place has had so much of my money) I use these mirrors http://www.ikea.com/gb/en/catalog/products/60074007/ on my SD2 which are a little big but it fits fine and the extra size also helps prevent run out as the nozzle heats up before printing. They should be perfect size for SD3+ owners.
Personally I still use kapton on the mirror but each to their own on that one.