I've been quite happy with the used RSR rebranded version of the MS8050 that I grabbed on eBay a year ago for <$100 USD. My only gripes are I could do without the green case wrap, and what's with all four banana jacks being red color? Label on the back of my RSR unit is purple! (EDIT: Oops, I see the one in your link is purple, too). What was some product designer thinking?
Hmm. Pulled the unit apart to look at the quality. I'd say mixed results on my main board, artwork dated 2006. I don't see any solder splashes as mentioned in the other thread, but yeah, there are some interesting SMD component installations. I see four capacitors that are formed from more than one part. One appears to be two capacitor chips in parallel. Two are formed from three chips in parallel. One, possibly the same as the pyramid one mentioned in the other thread, is three SMD chips soldered in a semicircle and the semicircle then soldered in parallel with another cap on the board. There's flux remaining on these areas, so it might be part of final tweak adjustments in manufacture or due to a recalibration.
I'll see if I can get a pic taken for another post.