You're telling Guitarist to look for a musical amp which is 150 watts into 8 ohms, double to 300 watts into 4 ohms, with enough power going into 2 ohms, AND budget friendly? Last time I looked at an amp satisfying those conditions depends on one's definition of "budget friendly"! A $2k budget might be "friendly" to me, but not for someone else, that's the point. For the benefit of the OP, will you also clarify what you mean by "anything less will be a disappointment"? Remember that his previous system consisted of ML ReQuests and Levinson gear AND that he is a musician so I assume that he knows what's he is looking for.An amp that can deliver 300 watts into 4 ohms is what should be your target. Martin Logan speakers require an amp with enough headroom to deliver the occasional 2 ohm highs so power output is not about loudness...it's headroom. Anything less would most likely be a disappointment.