I use the red/black flipover cover and I also like it a lot. It works really well for left-handers, too, as everything's accessible. I never remove the flipover cover. It has a 'hidden flap' for documents/business cards, which I wasn't aware of for the first couple of months!
The deluxe cover offers good protection, but I find it quite large and puffy. We sell many more flipovers than deluxe covers (10:1).
I use a HanLin USB wall charger with the DR - it works fine. Be aware that some wall chargers can cause strange problems with the DR, though.
https://www.mobileread.com/forums/showthread.php?t=40947