I just want to buy one of this rifle this week and I dont know nothing about rifle. Which one have the best overall performance?
I will appreciated you help.
What are trying to do, start a war on the S&W forum...

! This has been such a heated debate, you are likely to get a lot of varied/passionate responses. I really don't understand why so many people get so worked up over this issue, but it is what it is... I hesitate even writing this response, but figured a balanced/objective response would be helpful to you.
I can tell you that I've owned both, I'm a big S&W fan, but I now only own the Colt/Umerex rifle. Both have some positives and negatives, as far as features/function, but for me, I stayed with the Colt. I'm not going to get into the list of problems that I had with the S&W, and I understand they have made some improvements to the platform. I will say that I liked the idea of the S&W bolt being an actual working piece, similar to my ARs, but I had issues with my bolt. As someone mentioned, the bolt catch on the Colt is just decoration, but if you read the manual, you will know how to avoid any problems with it; mine is still in place. My Colt has been 100% reliable (except for one type of Remington ammo), it's accurate, and fun. The S&W was also fun, when it worked.
I'm sure if you do a search on the internet, you will find a whole bunch of threads describing horror stories with their S&W, and Colt/Umerex .22 AR variant rifles. These guns were made at a low price point, and both have some issues related to that dynamic. They are just inexpensive plinkers, not something you are going to take to Iraq... I do like the overall 'feel' of the Colt, better than I liked the overall feel of the S&W. The Colt feels/handles more like my other ARs, but, of course, there is the issue of the bolt operation being different than an AR...
I wish both companies just did it right, and put out a higher end version of a .22 AR, but that's just my opinion... You may also want to check out Sig's version of this rifle, as well as Ruger's (based on their very solid 10-22 platform).
Good luck with your decision.