I bought an OCR1 last year - the geomettry of the Giant just matched me best out of all the bikes I tried. I ended up with an XS size (I am 5'2, 28" inseam) and the bike store still had to find me a shorter stem so I wasn't stretched out! (I have found this is an issue for a many women)

If it's hard to try bikes, you may want to consider getting all your limbs etc measured (I think this is fit-kitting, but I'm not sure if that's the process or brand) and then plugged into a system that will spit our what bike-dimensions suit you best. I bought my first bike this way (without test-riding) and never had any problems at all as the bike was set up just for me.

I know you want a bike *now* but it's worth the time and effort to shop around and find one that's just right for you. You are (hopefully) going to spend a lot of time on the bike, so you want one that fits!