I use the speedhide flat or eggshell on many high-end interior homes, it works great. I'm not a huge fan of the speedhide primer (5-2 I think it's called) and even less of a fan of the 8 line series self-priming paint. So far I haven't found a primer that works better then the SW Masterhide paint and is self-sealing on new drywall. Spraying and back rolling it gives a finished appearance easily in one coat and in fact I'll leave my ceilings that way.