ya Oak no vet is gonna take an LA over 10k, its performance is crippled up there, big time. I Cant see charts on my phone but im sure if ya checked it out you would see large performance drop starting at 10k and just getting worse from there the higher you go, one thing I do like about it it is VERY hard to compress, the nose just wants to go up....it seems like it will pull itself out of compression lol it has awesome high speed manuevering, holds E great, regains it, and the wing drop is easy to control with some rudder, if ya havnt flown it much, take it up for a month youll be suprized at how vicious it is. Just keep it under 10K. you can reverse a zero so fast in that thing lol the guns are a bit whacky but hit very hard once ya get the hang of them. Which I still dont have haha