My Tiger flew very easily. It has good power and excellent reliability with the Saito 90 enigne. You never have to worry about a flameout. I always used 2 stroke fuel in mine. I never have used four stroke fuel as I dont think it has enough oil content. IN fact I think Saito and I know YS specifies more oil. YS will void warranty if the oil is less than 20 percent. I am not sure but Saito is 18 I believe. I know that works well anyway.

The plane flies so well it could be used as a trainer! Yet does good aerobatics and flies upside down with ease. Good luck you made a good decision.