Big skill, I love the C-101 and reccomend it. It does seem a little slower than the L-39 but I have beat them in a dog fight. Also it can carry a much larger and more useful load than the L-39. And I love the navigation radios because you can use VOR, ILS, NDB, and Tacan unlike the L-39 that only uses the rare Russian style nav radios. If you have and like the L-39 you won't regret the C-101.