I have yet to fly mine (maybe in the next day or two) I'm still working on the panel lines and going to put on the waterslide decals.
One of the reasons I decided to build the Yak-23 is because Rob, the owner of RBCKits, Ton the designer along with a number of others who own it have indicated it flys quite nicely and has no bad habits.
I've put some video up (it's hidden under the picture of the Yak on the main page www.Warbirds-RC.com.
) You can check it out and see how you feel about it. I'm planning to take some high quality video on my maiden and will post it later too.
I purchased the VESA launcher from HL, but I paid almost $100 for it, kind of rich for my blood. But I wanted a nice setup that could fold up and be put beind my truck seat. Will send you some pics if you want.
I'll do my best to answer any questions you have, Best wishes...