Well it depends on what you'll be using it for. The Galaxy Watch removed MST for wireless payments. For me, and the the fact my S3 runs just fine, was enough to stay with my S3. Along with Workout Trainer by Skimble, I have all the exercise functionality I need. I can't say it runs faster or not. But I really don't feel like there is enough difference between the GW and the S3 to go with the GW.
I'd say, save some money and go with the S3. Look around, you should be able to find a S3 cheaper than $299
Yea, I don’t really care about the lack of MST, never had it before but that isn’t a reason to pick the new model. I’m not seeing the S3 anywhere for less than $299 unless it’s used but I will keep an eye out. Thanks for the reply!