Thanks for the info. I was just about to buy the 5MP E73 when I saw the E77. I'd love to save money if possible, so would would the low fps be an issue for daytime surveillance? At 6 fps, is that good enough to capture someone's face walking briskly up my driveway? My Blue Iris zones are set from sidewalk inward so I don't think I'll be needing to worry about moving cars.