I believe there is thread on another forum (replying with Tapatalk so don't know if this forum's rules allow discussing other forum's threads) that shows the original 18200 as better for video (designed for the nex vg camcorder I think). I have original model. I love it. Rarely ever comes off my camera.
I briefly had the Tamron version of the current 18-200mm E mount lens when I bought my 5N. I thought that it was comparable to the 18-55mm in their overlapping range, but even though it is smaller then the original Sony designed 18-200mm it still felt too big when fitted to the tiny 5N body and so I sold it fairly quickly.
Depends to some extent on your camera body. I bought the SEL18200 in 12/2011- the only lens I could find then for my about-to-arrive NEX-5N. The lens is great, but on the -5N it felt unbalanced, i.e. the lens tended to topple the body in my hands. In 3/2102 I moved to the NEX-7 and this combo feels much better in my hands thanks to the heftier body of the -7.
I find the 18-200mm on my camera probably 95% of the time. It's off for low light (-> SEL50F18), wide angle (-> SEL16F28, maybe add the UWA adapter), or macro (-> Tamron 90/2.5). I use it hand-held all the time (you have to turn OSS *OFF* when it's on a tripod), so OSS works quite well... I've long ago stopped worrying about keeping exposure times less than 1/FL (AF is a much bigger issue in low light).
I did worry about my lightweight OP/TECH wrist strap (laminated foam) being a little too fragile if my camera slipped from my fingers while carrying it. I bought a Gordy's Strap (hefty leather)- I feel confident it can handle the shock load if the camera gets away from me. I also had an issue with inadvertently tripping the Video button thanks to the weight of body+lens, but that's been resolved on the -7 via f/w.
And none of this addresses comparison of IQ between the 3 18-200mm lens choices... I've only used the SEL18200 and can't compare. I've seen sample images from Tamron's version which I thought were equivalent to the SEL18200, but that owner eventually sold his Tamron and now uses the SEL18200.
The lenses seem to be consistent in IQ as most that have the lens are happy (no reports of bad copies). There is an issue with most copies of these lenses tending to creep out toward full zoom with the lens zoom-lock off and the camera pointed down, but mine must have tighter seals as it doesn't do that unless it gets jarred while I'm walking around (maybe it has to do with how I carry the camera).
My only complaint is that I wish it were a brighter lens, but that's not resolved among these 3 choices.
The old silver sel18200 is the best by far! Also the black one wont support the new autofocus update thats come out but the old silver one can. S pleased with mine the photos are so sharpe and its not too heavy its just right. Makes the nex system 100% in my eyes. so stick with the silver. It's so good u won't be disappointed. One tip lock the lens while walking around as it has lens creep. Not a problem just a tip