Hi guys, can someone tell me the best RC Transmitter (and RX) possibly cheap e.g. under 80/100, i want the basic functions and also fpv so how many channels do i need?

If you get 100 replies, 99 will suggest the QX7.
http://www.getfpv.com/frsky-taranis-q-x7...white.html

Yea QX7 is probably the best TX for around 100 bucks.
Here is a review of it: https://oscarliang.com/taranis-q-x7-tx/

If you can't front USD100 the Flysky i6S is a nice unit to use and works well. Turnigy Evolution is another option.