2.4GHz gets less interference (except from microwaves) and has good, solid transmission.
If you're talking about the Racon TX, my 2.4GHz version doesn't have a readout, and I can't change some settings because of it. There is a plug on the side of the TX, and I assume it's for connecting a readout but I don't know.
The first post in this thread will tell you all about the Racon 2.4GHz TX:
http://www.rcdiscuss.com/index.php/topic,19783.0.htmlMy advice is to fly this TX if you can, for a while, then get a Spektrum DX6I. That's what I'm gonna do.