I'm going to the music store nearby tomorrow to spend an hour or two trying out the Peavey 6505 and Triple XXX. I was wondering if anyone could reccomend me some settings to use with either amp so I get the best picture of how the amps can sound. I'm looking for a really heavy crushing rhythm tone and the typical high gain lead, MAB/Chris Broderick/Necrophagist kind of lead tone. If anyone could help out it would be appreciated.