Full Specs Here

the Powerware 9125-1500 2U is a better alternative to the APC Smart UPS 1500 2U for about the same price

Full Specs Here

How its Better
 
TOPOLOGY - The Powerware is a Online UPS... providing the ultimate firewall against power problems  
 
EXPANSION - The Powerware offers the ability to Add battery cabinets and increase runtime  
 
PERFORMANCE - Powerware is a spec grade UPS with a list price 50% more than APC's unit. Its the trusted source for electricial engineers. Plus the Powerware is a true 1500va unit. APC is a 1440va unit.  
 
MONEY - The Powerware costs LESS than the APC Unit.