I've actually heard and played a few bugera amps. the 333xl (loosley based on the peavey XXX), the 6260 (based on the peavey 5150) and the BVV3000 (based on the ampeg svt cl). While these amps don't exactly nail the tone, they are (for the most part) quality amps.
The 333xl by no means recreates the xxx but has a great tone to it. Youtube it and see.
The 6260 comes very close to the original peavey 5150 with the right cab.
The BVV3000, like the 6260, comes very close to the amp it's based on and is built like a tank.
$700 does sound ridiculous for a 300 watt all valve amp but with both guitarists in my band sporting bugera amps (the above mentioned 6260 and 333xl) for over a year with no repairs, it wouldn't be too big of a leap for me to get this amp. Surely, when I get the money I will become an SVT snob but until then I wouldn't mind having an all tube amp for the price of an ampeg b2re (which sound like absolute garbage even if it is made by ampeg).
This is my point exactly... I know many musicians that use Behringer gear, most of whom have no idea boards like TB exist and describe their gear as "awesome" and "solid." They are likely right.
I also feel you on Ampeg; though they make some stellar gear, they make some absolute garbage, and have since the SLM days. Having the name seems to make all the difference.
IMO/YMMV, the only amp manufacturers that are legit in their marketing while building quality equipment at appropriate prices (note I am indicating both, not one or the other) these days are Mesa, Genz Benz, GK and Peavey. There seems to be some substantial marketing deception and prices not matching grade (MarkBass cabs come to mind despite appropriately priced amps) amongst the other brands.