Weapon of choice is the Skyfun jet number 2, I would say its easily the fastest. I love the trojan and 3rd place would have to go to the Stinger, its super fast but I dont fly it as often due to the size of my flying area.
Yeah I have upgraded the motor in the number 2 jet (check out my skyfun jet thread).
The prop dosnt break on landings when you have a good qaulity prop, the stock ones break pretty easy when the prop stops verticle. I put a wing skid right infront of the prop so it dosnt protrude as much.
They are a blast to fly, nice is agile. Pretty slow in stock form.