RE: What's the Difference in these Airtronics Tx?
Believe me, it's worth $10 to get the correct transmitter.. Using a Crawler radio will cost you a lot more than $10 in the long run, if you try to use it as an Aircraft radio, then crash due to the sticks self centering!!
you can alwas wait a few weeks, they will go on sale for about $199 or sometimes less.. subscribe to the hobby people news letter, they are always sending out emails for sales they are having, I probably get about 2 or more emails a week from them!
Craig.