Did the hud mask pool demo today. it's pretty cool, a very comfortable mask and adjustable to fit pretty much anyone. the display is easily readable, although in my opinion not a true "heads up" display per say. basically, oceanic has taken a dive computer, made it small enough to attach to a mask without looking too klunky, and stuck it in the corner. it cuts into your peripherial vision a bit, especially if you were to try to use anything attached to the right side of your bc close to your chest. the computer does pretty much anyting a rec diver would want, and some stuff you may never use. it's very convenent though, and even in zero vis you will be able to see critical info. Given the price is comperable to a vytec or d6/d9, or a number of other hoseless computers, i'd say it is worth the cost.