JuJu:

I purchased a Giro 20 frame last July and exBF built it up for me. I really do enjoy it but I simply can't stop riding my DF. I enjoy my Giro but it is a different ride - I have found I must maintain a high cadence on my Giro and you will definitely find you are using different muscles. None of this is bad just observations on my part.

I am 5'2" and ordered a small frame. It took some time playing with the seat position/angle before I found what worked best for me. I must keep the seat in a fairly upright position which I have found allows me to climb a bit faster.

I use both bikes to commute to work and can honestly say I'm must faster and stronger on my DF which is the main reason I won't park it and ride my Giro 100% of the time. I can comfortably ride my DF on a century and feel pretty darn good at the end of the ride. Since I've not developed my "bent legs" I'm pretty worn out after a 25 mile ride on my Giro. Again, it is my lack of time on this bike that is the biggest contributing factor. If you are going to make the switch 100% I bet in no time you will have developed your "bent legs" and be equally strong on your Giro.

Keep us posted!