Yes, flying a two meter competition model will absolutely spoil you. Beware of the costs. An 'introductory' two-meter will still cost 'ya at least $1,000. There are some 120 sized options that work well with the YS 110 that you can start with for less than that. The smaller models can still be competitive at least through intermediate.

P.S. As far as four-strokes for pattern models, YS is top dog. Some guys are using O.S. 160 two-strokes in their two meter stuff though.

I wouldn't have suggested the Decathlon over in the Beginner's Forum if I knew you were going to jump in head first and not look back. You're tearing through this hobby faster than I did, that's for sure.