I figure I'd post this here 'cause you guys 'know me' the best and know where I'm at...

I need an engine for my plane - a sub-9lb. 69" Yak. This plane was bought to 'balance out' my fleet - my other 'go-to' plane is a Venus II with a 120AX. I'm hoping the Yak will end up in some IMAC meets and open the door to some more '3D style' aerobatics, but not really looking for all out 3D. As most of you know, I just finished up my first season of flying and am really into pattern. So far I only have experience with OS's AX engine line and am DYING to have a four stroke. I figure I'd post [link=http://www.youtube.com/watch?v=TQgs4OWmY8s]a link of some flying[/link]. FYI it's a new (untrimmed) plane, new radio, new engine, and new field, so it's a little messy. Here are the options and my thoughts:

OS 120FS $350 and a $40 rebate: I love OS (ease and reliability) and Hobby Services, as well as Tower Deals. May lack the power I'm looking for?

Saito FA-125 $390: I've been told this engine goes well with the plane by 3D pilots. Running on the expensive side since there's no Tower Deals and free shipping. I feel like if I'm gonna spend this much ca$h, I should just go for a YS.

YS FZ110 $370: Gobs of power; always have the option of putting this one on the Venus if I wanted to. Runs on expensive fuel and is more of a handful for a first four stroke. Probably my favorite choice (thinking the OS isn't enough power) and feel that I'm gonna be running a YS one day, just not sure if I'd be jumping into it too early.

OS 120AX $270. Old Reliable, least expensive, and great wide open power. Just not a four stroke.

Thanks for your thoughts!!! I really appreciate any input based on what's right for me, and not just your favorite choice