WOW i hope you are ready for an array of opionions on this subject. I am sure there are favs out there and there are people who say never again. For me I have to say I have only flown one trainner when I was learning I guess I was lucky. Since then I have trainned many people and I would say I dont have one particular favorite but I do believe a semi symetrical wing is the way to go when you are learning IMO those are the best trainners.