The Corsair is a fine choice, but the only ones to look at from Coolermaster are the I-Green series, or the Real Power Pro.
Here's link on how to test your PSU with a DMM and ne on how to start it without connecting it to a motherboard.
http://www.techsupportforum.com/hard...tml#post829293
http://www.techwarelabs.com/guides/misc_mod/psumod/