After much researching I have pretty much decided on the GWS Slow Stick as my first plane, but selecting a transmitter is where I am looking for some info. I would like something that I can use for the next few planes after this one, but don't have a huge budget so I am not going to jump to top of the line (yet). I would like to be able to add on a controlled 'toy' or two once I get going a bit, a digital camera (I have a pencam that should work) for example, so I would like an extra channel or two. I am pretty much setting my price limit for the Tx at about $300 CDN (roughly $200 US). Some of the 6 channel models in this range (carried at a store within a couple hours of my place) are the Futaba 6DA & 6YG, Hitec Laser 6, JR XF631 and Airtronics VG600.

Any general info on what features I should be looking for, as well as specific brand/model recommendations, would be appreciated.

Thanks!