True, but for "general use" I'd guess that the JYD2 is superior, simply because there're more times you need/appreciate a "slicer" than you do a "tank".-this is in my experience, which usually excludes hard use. -@APF.
Convex can be put on anything. I think the knives you talk about will be just fine with it. If you plan to buy a knife already convexed, though, I think you'll have to go for the Fallkniven folders-the U2 is right within your price range and a pretty little slicer. No one-handed opening is the downside.
Do try to handle the knives before you buy. A lot of times how much you like and carry it is determined by weight and ergonomics. I, for one, am glad I got to handle a Spyderco Native-handle just didn't feel right-and a BM Rift, for the same reason. Both excellent knives by specs alone.