anyone gone from psm156 to niagara 3000/5000? I've read differing opinions; some prefer the Puritan whereas others say the Puritan makes music sound thin/bright and prefer the niagara 5000. I'm currently using Lab12 Gordian and Niagara 1200, both of which I quite like, but am curious of the benefits/bump in sq of going to Puritan or 5000.