I recently got a D-109WB, and it's a great radio, but does have some faults. Not as sensitive on MW by itself as some other portables I have, although plug in some headphones and add an external loop it's an amazing MW DX radio, because of performance and also the great sound. Main lack on MW it seems is probably the internal loopstick.
On SW it's good. Matches my other portables on a 25 ft wire. On very strong signals it will overload, however. The DX/Local switch gets rid of 90% or more of the overload. It has several usable bandwidths and a tone switch, which also helps. I've been using it a lot lately for MW DX at night, and it's a great radio for that.
I would say it's a great value for the $50~ spent, but from what I've read of the Qodosen DX-286, I think that radio is undoubtely worth the money, being that it's raved about by MW DXers and SWLs. FM DXers seem to like it as well.