We have two twins standing around (again), which have problems with Torque-Split exceeding the allowable limit (and not only a little bit)...
You can imagine how much money the company is loosing now with both A/C on the ground..
Luckily, all the single engine helos are doing a good job...
I know that the majority of twin-helos are always doing fine...
But as long as you do not definitely need a twin (according to air law / restrictions / or for Offshore-Operations), i would always prefer a single engine helicopter-but thatīs my own, personal opinion...