My black Sigelei 75 that I ordered from Ecig Avenue for $50 Friday night arrived today. Absolutely no slippage or other issues with the side panels that some others have mentioned. No button rattle either. If I shake it hard enough, I can hear something rattle inside, but it's not the buttons as I had my fingers covering those. I wish the 510 pin was closer to the center because the curved top edge leaves a gap under a 22mm atomizer. There is a film over the screen that can be peeled off. So far, I've only tested nickel builds in my RDAs. I've got a single coil at 0.13 in my Plume Veil and a 0.08 dual coil build in my Velocity. Working great so far in both, no dry hits when the wick goes dry, just a gradual reduction of vapor and flavor.