Planet kit is cheap and cheerful, if it's still in production. It's not got the most bells and whistles but it's functional and at an affordable price. Take a look at the Howe's double page advert in MB magazine. They often have special deals.
The flysky fsi6/tgy i6 upgrades to ten channels for the price of a of Data cable at £3.00 from hobbyking and a 10 channel telemetry rx £15.00 some sensers at £7.00 so it monitors main battery voltage and RPM which is very useful especially the voltage . RPM handy for prop choosing I have done my tx and now all I have to do is figure out what to do with the other channels better to many than not enough Good set and expansion at low cost 👍