Maybe see if you can rent a few choice mics from a rental company/studio for a big re-amping session and see what mics you're leaning towards? With something like this it's hard to say. I haven't liked my SM7 on guitars at all but guys are getting good results, I've quite liked my D2 as a blend with a 57 but lots of guys say they hate it.
Never thought about that. Has to be way cheaper than just buying and selling if I don't like. Good idea man!
Thanks dudes, got about 5 mics I've never used or heard of I need to look into now.