I have the Stinger, and am really happy with it. The PC interface is a little dated these days (ie, its not USB) but still works well, even though you have to fork out extra dollars for the interface cable, or make your own)
I went for the Stinger because of its size, which means I can still use it as a watch mainly when I'm diving for a week or weekend. (Its still a bit too bulky for everyday use). One prob with it is that it doesn't have a user-replaceable battery, so it needs to be changed at a Suunto service centre once every year or two, depending on how much diving you do.
Major factors about choosing a watch-size (Stinger, Mosquito, D6, D9) over the larger ones (Vyper, Vytec, Gekko) are a larger display vs wearing when not diving.
If I never need to replace my Stinger, it will be with another Suunto. Hell, if you want to buy a 2nd hand Stinger, I'd by a D6 tomorrow
