The Tiger 60 is a VERY stable plane. I've been flying mine with a GMS 61 for about 3 years now. I've used it several times to train children, as recently as last Sunday (Dec 24 - a 7 year old). I recently took delivery of a Tiger 120. I may use a GMS 120 on it (more for weight than power - I've heard they come out tail heavy even with a 120 FS).