I started on a Calmato 40 trainer, and let me tell you one thing!
This plane can do acrobatics, and nobody believed their eyes on the field when they saw it

It can do much more than what a trainer is known to do, you just need to push and the calmato will deliver... It can even hold a knife edge for a while and believe me lots of acrobatics!!!!!!!!!!!!!
I've tried it, abused it and then moved to a second plane after two months. That was the easiest move, and my second model was a sig 4 star.