Despite all the well-intentioned responses dealing with the theoretical above, I have to agree with Seandtaylor99. You already have your speakers chosen, so your mission is quite clear: find the amp that sounds best with your speakers. If you've already determined that Lamm is the brand you're most interested in, then you need to try and audition both the amp models in your system. One of the two will no doubt win your preference. Nobody should have to drop the kind of bucks these electronics cost without being able to hear them at length at home first. (You might also pose your question to the respective manufacturers of your speakers and desired amps just to get their takes on the issue, but you'll want to be prepared to give them more info than you've given us, such as room size, ancillary gear and cables, musical preferences, and listening volume preferences.)
