@valve90210 the 3100KV you posted is pretty much what I have (only mine is orange and waterproof). This is a mild upgrade. As soon as the street dries out I will compare stock to this motor. Probably I can ramp up the gearing some and make it faster, like
@Bigpoppa99 .
The second one you posted is a more powerful motor. The can is longer and it's 3800KV. It should be faster and have more torque than the other motor. I'd expect this to be a serious performance upgrade, and your spur gear or transmission may not take kindly to it. If you want a programming card, you'll have to buy it separately and pray that it is compatible.
The weak point on these ESCs is the little fan. Mine is noisy and wobbly from the first time I turned it on. I don't expect it to last.