I been looking at the book on the 8103 and it looks easier to just spend the $44.00. I thought I got a deal at $100.00 for a pair of matchboxes! Eventually I will get a 10x. I really like the conditions switches. Instead of switching the rudder,aileron and elevator d/r switches you can just hit the condition switch to get out of 3D. Still a bit on the $$$$ side for a backyard flyer like myself. I do have a big back yard though.