Before you head for the Electronic store, it is always better to do a little bit of research on what you will need to hang the TV up.
You know the type of TV you are going to buy, but what about the wall mount hardware you are going to need to hang it on the wall. There is no doubt after the selection of the TV, the salesperson is going to try and sell you the correct wall mount, cables, brackets, nuts, bolts, whatever you will need to hang it up. Employees are always trained to push the accessories that are needed for big purchases. It is great you can get it all at the same time. Unfortunately, the accessories are very expensive in the stores.
While there are hundreds of websites online, you may have to go through a few and read up on what you will need to buy. The best way to start is deciding where you are going to put the TV. Will it be fixed on the wall where it will stay until it is replaced or you move? Do you want an arm so you can swivel it and see it from different angles, or do you just want the fixed mount that allows you to tilt if needed?
Whatever type you choose, it is very important to read the specifications of the mount to make sure it can be used with your type of TV. There are Motion arm mounts that may only be good for TV's under 50lbs, but if you have a 50" TV, you are probably going to have to look for one that can safely support a 150 - 175 lb TV.
Like everything else, there are makes that are better than others, this is part of the homework you need to research. Buying the wrong mount for your TV could result in a disaster if it falls off the wall. Here are a few wall mounts that would be the best for that particular Flat Screen TV