I have a new quad core 2.8 being built (ya!) and can't seem to get a good answer on how powerful of a power backup / surge protector I will need. I don't won't to skimp on a $3k box (and a new monitor) but do I really a $200 model such as this one? APC Back-UPS RS 1500 LCD 1500VA 8 Outlet BR1500LCD - $200 I have a APC 500 on my current PC and it has always worked fine, is it time to bite the bullet and upgrade for the Mac Daddy? Thanks!