I tend to think of how Wouxun compares to the others is how you want to use the radio. For a program and forget it's hard to beat a Motorola or other commercial radios but for the most part they don't do what a KG-1000g does nor were they designed to. Things like tone scan, program from the radio itself, listen to VHF, dual VFO/Scan or airband and such that a KG-1000 does do.
I got a KG-1000g+ the week they came out and to me is was an attempt of Wouxun to clone or emulate a Yaesu/Icom style Ham radio for the GMRS market, not a commercial style radio and they did a fair job at it. It missed a few things that a Yaesu FTM series or Icom ID series have but may not be important to you. The Yaesu and Icom both have two button access to drop a channel from scan for 5 minutes and the Wouxun doesn't. A feature I like if there is a bunch of garbage on one frequency when scanning. The Wouxun scan speed also sucked - at least 75% slower than my Icom or Yaesu but did work fine. Again, not a issue if you are only scanning a few frequencies but it was definitely noticeable. The digital volume was also a bit annoying on the KG-1000, at the lowest volume setting of 1 when used as a base station the volume could be heard in the other room (annoying the wife) so had to use the speaker in the mic at night. In a mobile situation I doubt you would ever notice. My Icom and Yaesu doesn't have that issue.
I sold off my KG-1000g+ after getting my ham license and it's now on its third owner. The second sold it off after getting something different as well. I lost maybe $25 after original purchase and the second owner sold it for the same he paid me for it. So at least it holds it's value.