I have three 3D TVs, all Vizio brand. Two are 32" like this one. I'll share some of my observations which may be dated or just plain wrong.
I don't think 3D is just a gimmick. I think the current 3D movie fad may pass, but I think the 3D sports will soon take off. Regardless, as others have mentioned, the 3D option is going to be put on the best TVs for that brand's series, a fact which is pretty obvious when you compare options within each brand. That is the main reason we went with 3D and we have been happy with them all.
A lot of the specs being thrown around with TVs do not mean very much as there are often no standards by which they are measured. The frequency is one of these. 60 Hz is pretty much the threshold of what the human eye can determine, and even then it can not pick up much detail, only a flicker pattern if one exists. Most modern TVs do some type of interpolation for standard resolution, and it is the artifacts your eye may pick up at 60 Hz. 120Hz is more than enough to hide any artifacts. One of my TVs is 480 Hz and the other two are 60 Hz and I see no difference. The 480 Hz is actually 240 Hz for each phase of the 3D signal, so I suspect this TV is truely 120 Hz per phase, which is why they use the "Clear Motion Rate". Still quite sufficient.
This is not shown to be a "Smart" TV, but you are probably going to need to get a 3D BluRay player to go with this anyway, and they should have all the same apps you would get on a Smart TV.
I have been looking for another similar to this, so I am in for one. All the Samsungs I have seen in the stores seem to have a good picture and style.