I would have to agree with getting a 2.4GHz system rigth off the bat. For one, it's the new technology with great track record, two, there's no more frequencies to worry about, 3 all the new 2.4GHz systems have several model memories (and Spektrum has model match).

This is my second time around this hobby and i went with a DX7. 3 models later i KNOW it was the wisest decision i made.