I have two Benchmark AHB2s ordered. I'm driving Revel F328Be speakers with the Mark Levinson No. 536 monos. I have a Pass XA25 sat aside. I bought the Revel/ML gear thinking that Samsung/Harman would have a lot to offer in their top products. They talk about their blind testing as has Amir. They are great. But, maybe I heard more detail when I ran the Pass XA25? I heard about the AHB2 and looked at John Atkinson's measurements of all three amps. It looks like the Benchmark's are better in all but peak output wattage. Maybe the XA25 is quieter at low levels. Anyway, have any of you had the experience of replacing expensive monoblocks with less expensive Benchmarks? The retail on the ML amps is 5x that of the Benchmark. (I bought used)