Road Cycling - Rule of Thumb for Upgrades

I have a 2003 Specialized Allez (MSRP $650).

I really like the Specialized Allez Comp (MSRP $1,700).

My question is: I definately would like to upgrade my wheels, fork, etc. Is it just better to buy an upgrade in this instance? Sooner or later the only thing left to upgrade is the frame. Therefore, is it better to just fork over the dough upfront?

I am more into climbing instead of sprinting; therefore, I would really like a lighter bike and I really like Specialized.

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It's best to buy a better frame and swap components at a later date. Components can always be changed, but the frame will always be the same old beast of burden.

I buy a bike with it in mind that the frame will outlive most of the components. So far, this hasn't proven to be true, as I get the new bike bug every 5 or so years at most. At any rate, you can upgrade your current bike until the cows come home, but you'll get to a point where you're putting lipstick on a pig. Unless you really love the frame you're on now, I'd suggest holding off on the upgrades, saving the money you'd spend on them and putting it towards a new bike.

Now, there is the occasional frameset that's worth upgrading ad infinitum, but they're rare and usually have some personal value that transcends all else. In your case, it doesn't sound like that's what's up.

I agree with the others, but I like to upgrade :) You could always upgrade the frame and fork first then go for the components and wheels next.. or upgrade the wheels.. and fork etc.. whatever order you prefer and get the frame next.. About the only thing you might not be able to move over to next bike is possibly the front derailleur, BB if you go from english to italian etc.. and fork if you're new frame is 1" vs old one is 1 1/8" and length of the steerer tube gets cut to short to move over...

If you go the upgrade router after a while you will have two complete bikes, and not out alot of cash instantly and you can get the exact components you want.