Hey guys. I have been really having trouble with a decision and need some input. I bought a Specialized Tarmac Elite (mixed 105 group) a few months ago and have the itch for something new. I upgraded my wheels to mavic ksyrium elite and love them, now I want to invest more money into my bike. My problem: either sell the bike and buy a new one, or upgrade. If I sell, i have 2500 to work with. If I upgrade, I will put a full sram force group on the bike. I love the frame and wheels, just would like better shifting and lighter parts. If I sell, I would be getting (probably) a rival bike with lesser wheels. The primary upgrade if I buy new would be a frameset and "one step up" groupo. Would it make more sense just to opt for the force since I am happy with my frame, or is a stiffer/lighter frame really that important if I am content with mine now?