I'm looking for a Servo I can for the most part count on, that I don't have to pay a lot of money for. I'm not the kind of guy to buy electronics from adaFruit or Sparkfun, I'm honestly more of an Amazon, eBay, Chinese Warehouse shopper.
In your opinion, what's the best bang-for-your-buck Servo?
I'm looking for something that can rotate very quickly back and forth in an incremental sequence with a light payload, and won't have it's own personality (won't operate at different speeds than other same brand servos).
Until you quantitatively define 'bang for your buck' all you're going to get here is personal opinion... I'm not saying it isn't valid, but it might not be relevant.
Also, I agree with Robin - and would add that quality components (beyond even sparkfun/adafruit) open up a interesting new world of project 'space'.
I just dropped $50 or so on 2 servo's, but that's because I needed high torque, ultra-lightweight, 7.2v voltage, and a small profile. But I'm not going to use those servo's on a Ultrasonic scanner, or some other application that the servo is not critical. I already have a stack of Tower pro 9g's laying around for that stuff. So as mentioned, unless you say what your intentions are, it's hard to answer that question. Hobby King does have a servo finder tool that lets you put in specs.