We've put APC/Belkin/Liebert UPS units on our scopes at work. They put out fairly steady voltage, but it's a bit noisy. There's a huge debate as to whether or not it is audible/visible, but obviously clean power would be better.
APC has a line of AV battery backup units that is supposed to produce much cleaner power (haven't tested them personally), which may be the one you mentioned above.
Personally, I would go with the smallest APC AV backup unit and only have the projector/TV on it for fan/heat protection in case of an outage. I'd use a more traditional (and cheaper) power conditioner for the other components. I've had good experiences with Panamax and (I hate to recommend them) Monster. The Panamax units are much better built, but were pretty pricey ($350 on sale).
Good luck.
APC has a line of AV battery backup units that is supposed to produce much cleaner power (haven't tested them personally), which may be the one you mentioned above.
Personally, I would go with the smallest APC AV backup unit and only have the projector/TV on it for fan/heat protection in case of an outage. I'd use a more traditional (and cheaper) power conditioner for the other components. I've had good experiences with Panamax and (I hate to recommend them) Monster. The Panamax units are much better built, but were pretty pricey ($350 on sale).
Good luck.