Originally Posted by
Iride01
You can't go by the height of the top tube. You need to learn to look at the stack height in the specs. Otherwise you might find you have too much reach from saddle to bar and are still in that more aero position than you might want.
Todays Roubaix has one of the highest stack heights of bikes out there today. I didn't search hard for the geometry of a 2004 Roubaix you have currently so I don't know how it compares. If you go to a shop then just tell them you want a road bike with a relaxed fit. Sizing varies between one model of bike to the next, so don't just assume that a 54 in one model is the same as a 54 in another model bike. And from my experience with different sizes, you can usually ride a bike a size up or down from ideal. Just might have to change up more stuff like stem length.
Thanks for the tips, I have a good bike shop, I'm sure they'll give me a good fit, I just don't remember them taking inseam into the equation and didn't know if it made much of a difference. I will definitely bring my current bike in, and also will tell them how I ride. I love the hoods, the tops and the part in-between those two sections, I rarely go into the drops. My current geometry did feel a little cramped and I had to go to a longer stem to feel comfortable. I don't ride sitting up, but I'm not so aero that my head is near my knees

I think I've learned enough to just let them know of my shorter inseam and let them factor it in, if necessary at all. THANKS!