Not all trainers fly the same. They all fly somewhat similarly... but some have higher stall speed than others. Some are better at aerobatics. Some have higher maximum airspeed. There is a HUGE difference in how a Dynaflite Butterfly (HUGE SLOW 99 inch span 3 channel trainer for .09 to .20) flys vs a Kadet MK II (or whatever number they are up to now... relatively heavy appx 55 inch span 3 or 4 channel for .25 to .40) and then there's the Avistar. (and the old version GP-PT which had semisymetrical airfoil and would fly just about like the Avistar...)

The Kadet LT-40 will be a nice slow flying trainer. Its an easy to build lazer-cut kit. (much easier than the Kadet MK II or the box of sticks kits like the Kadet Sr) You would almost assuradly not be dissapointed with it except when you try for aerobatics. (it isn't a Somethin' Extra. but a Somethin' Extra isn't a trainer...)