Yes! I love the flip, it tracks so straight, and does lots of cool stuff.... I have a thundertiger 91 fourstroke 14*5 prop 30%.... rips....
Question for all the flip owners out there: where'd you end up on the CG? i've been playing around with some lead weight on the tail, but i actually don't know where its supposed to balance cause i bought it used... anyway best 40 size i've ever owned... its big for a 40 though, isn't it?