GermanMAESTRO is basically MB Quart part 2. All that's left of MB Quart home audio now is what Maxxsonics acquired from the fire sale -- new old stock, I guess you'd call it. Meanwhile, the German engineers of MB Quart who so unpleasantly found themselves without a company, created GermanMAESTRO.
As a matter of interest, I almost suggested the German-made MB Quart Alexxas for this list, but they don't quite meet the $300 limit. Having been designed by the same people, the Alexxas very much resemble some of the GermanMAESTRO speakers.