Personally, i like Futaba. Easy user interface, available in most hobby shops and a service facility in the US (if applicable to you). The 4PM is a very good mid $ radio with plenty of room to grow features wise.

Spektrum...i have a DX5R i got in a trade that is just not very good. I really dislike the user interface, it takes a long time to do the same things as the Futaba.