MTK,
Don't get upset please, this forum is suppose to be part of this hobby, the fact is nobody tells how much money people put in a top pattern plane, and that is really the cost, the Amethyst is the best selling F3A byplane ever, I think even monoplanes, and if anyone make a big effort and buy one, it will do it with good stuff, at the end, we all need to compare apples to apples, it is just not fare to do like some people post someone is smarter because it can do the same with 20% the price when actually in serious competition you don't see what people usually write in the posts.
BTW, last time I tried a driver, the pieces of grass were flying farther away than the actual ball

, you can guess how far that is.
Good luck with DLE project, I always follow your research, hopefully you will make it work for pattern.
Regards
Alejandro P.