IMO APC is the best when it comes to power protection. I have lost a little confidence in them because some of their newer products (the cheaper ones) just don't seem as good. I recommend you get a Back-UPS Pro 650.
The UPS in that hot deals post has a VERY VERY fishy look. It's been posted here before and I clearly remember something important (AVR maybe?) was missing. It just doesn't make sense for them to sell a 1000VA UPS cheaper than a similar 420VA UPS.
Ignore me if you wish, but don't come back crying when it doesn't work like a true Back-UPS Pro.
BTW, I would not buy ANY APC UPS that cost less than $100! Those are usually the Back-UPS office series which are junk IMO. I've used some of the Back-UPS Office series and they seem to be little more than a surge protector with a battery. I just don't trust them!