LA 40s are good engines but not the most powerful engine around. Well taken care of they will perform for a long time. But they are not timed for the higher RPMs, so a Thunder Tiger 46, Tower Hobbies 46, GMS 47 and of course the OS 46FX or AX will run circles aroung the LA 40. Even the Magnum XLS series develop more power than the LA 40.

You pays your money and takes your pick. Me personally, I would go for the Thunder Tiger Pro 46. But then you could step up to the Super Tigre 51 or a Magnum 50 XLS -- a lot more power.

Cheers,

Chip