i think the avistar is the best trainer... i have a 40LA on mine and can do alot of aerobatics if i want... with the semi-symetrical wing it will give you the skills to progress to that second plane... manuvers that can be done with the avistar and the 40LA

inside and outside loops....
rolls
cubans
hammerheads
inverted flight
inverted flight to outside loop
tail slides

im sure there are more but those are the ones i do with it...