As I have been for 8 years in this hobby, I have used couple of different servo manufacturers for my foam airplanes.
Since there are a lot of cheap Chinese servos on the market, I made this video to help you decide which one to buy.
You can always play on safe and buy Hitec HXT900 servo, but these TowerPro SG90 are much cheaper and have the same quality as Hitec ones.
The problem is that there are a lot of bad copies on eBay and you have to be careful when buying the original ones.
So, check my video and here is the link on eBay from which I have purchased my servos last time:
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