It is hard to shop like that because, as high end cars are a finished complete product, the amp is just one piece of the puzzle and being top shelf alone does not mean it will perform good. I have heard very expensive amps and speakers sound terrible together (Lexicon and B&W) Synergy is just as important as the product itself. Some gear, no matter how expensive, just does not sound right.
If you have the set of speakers that you are set on keeping, that do everything you think is right, try testing different amps until you find the one that works the best. Speakers can be forward, laid back, image tall, short, focused wide, laid back, bright etc... you need to find the amp that will match your speakers signiture the best. Be patient and it will come. What type of speakers are you using?
Steel
If you have the set of speakers that you are set on keeping, that do everything you think is right, try testing different amps until you find the one that works the best. Speakers can be forward, laid back, image tall, short, focused wide, laid back, bright etc... you need to find the amp that will match your speakers signiture the best. Be patient and it will come. What type of speakers are you using?
Steel