i had a Hubsan 501s, about 10 minutes flight time per charge, gps, follow me . was hi-spec for the price when new and easy to fly and you can modify it quite a bit.
look for one with a few batteries and antenas on outside of the controller, there under £200 on ebay .
if you want something that almost flys itself have a look at mavic pro around £400 to £600 depending on extras
you wont be able to check you moped as you cant fly them within 50m of houses or other people