Hey, I have Montana XP that I like a lot. I am powering them with a Wyred 4 Sound 500 watt, but actually 1,000 watts since the XP have a 4 Ohm rating. Very smooth with lots of detail. I was considering an amp change, but after a while I realized I didn't need to spend the money to get something that sounded only just as good, used a whole lot more electricity, or needs a half hour to warm-up. Unless someone here can confidently reccommend another amp that is under 10K new that will blow mine away (I don't mind if you say that if it's true) I will keep my amp.