Depends on how much you use an iron & what for, but I'd say that YIHUA unit you linked to is a pretty good looking set up for the price, compared to the Weller. Personally I have a simple non adjustable iron, must be 20 years old by now, still works fine & a Weller pistol type gun for the heavy duty stuff. Also had a small rechargeable unit but the battery finally gave up the ghost & it's trash now. I remember when I was a working stiff, Pace kits were all the rage with the pros, but I haven't even looked to see if they still exist.
..quick search...
http://na.suzohapp.com/tools/92144000.htm
...a bit pricey though... what's your beef with the Radio Shack tool? If it gets hot & melts the solder...