I would not base my decision to select a particular brand dependent of the the parent company, there a loads of small companies that make amplifiers and the competition is stiff to say the least, parent companies buy up the smaller amplifier factories like MB Quart and Crunch and etc and fund several different brands, just to stay afloat.
As an example: MB Quart was bought by Maxxsonics, the same parent company that owns Crunch Autotek and HiFonics but people want to trash MB Quart just because they are owned by the same parent company that owns what i would call 3rd tier manufacturers but i would classify MB quart as 1st tier manufacturer aka top of the food chain but despite MB Quart's solid reputation and rave reviews people will pass them by just because they are owned by a parent company that also owns less popular brands.
People replace the sound systems in their brand new Mercedes Benz, Jaguar and BMW with MB Quart products but if you ask someone on a forum their opinion it will be negative, people are a strange lot and defy logic at times but i still love em..
Hope this helps, cheers..
If you want to know how well a product performs search for reviews and/or videos on youtube