RE: Replacing Futaba 8UHFS
Unless you are ready to go 100% 2.4 the 8FG is out. While the 7C is a reliable radio it is long in tooth and NIB 72 channel selection is limited.
More money but the 10C provides the best of both worlds. Module based, it can use your existing module, or synthesized 9C or 10C 72 module or 2.4 module.
Latest technology (the 8FG is also but limited to 2.4), user updatable and has a nice big display.
Go online and compare the current features and consider the future updates.