As someone who went 2.4 back in early '08 with Spektrum DSM2, and have thousands of trouble-free flights with it,
I would say buy the system of your choice, follow the manufacturers recommendations carefully,
be careful in installations and diligent with power (battery) systems,
and go have fun.

Oh, and filter all the static in this thread very carefully.
There is a lot of noise, and little useful signal.