Some catalogs to browse thru:
http://www.alt-energy.com/catPDFs/low/09-Inverters-low.pdf
http://www.xantrex.com/products.asp
http://www.outbackpower.com/products/
http://www.magnumenergy.com/productsinverter.htm
Gotta watch what you type when you so searches. 220V is "european" single-phase, 240V is "american" two-phase, common residential service.
I've had the same problem, talking to people who are ignorant of the difference, and then they read through international catalogs... The new guy in customer service at some places just picks stuff from a list, and the trouble begins...
Steven Fahey