My sincere apologize shopgirl, I'm the newest of noobs to this game. I had no idea there was a correct way or a wrong way to shoot a photo of my bike/bikes. I just assumed when I stated 4-c & 6-d I was giving all the needed info on my two CAAD's. Like I say, sorry.

My next question probably should be take to another thread, but since I'm talking CAAD's I'd like to keep it here in the Cult.
Remember I'm the newest of noobs ;^)>>>> I've been riding the white CAAD9 6-D exclusively, every day (rain or shine) for the last 3 weeks. On the flats & mild hills of Western Kentucky. Yesterday I went up to the Shawnee Forest's, Garden of the God, to check out a 37 mile run. This run has some of the tallest hills in Illinois. Quite frankly I find these hills some what intimidating. BUT!!! I want do em.
SO HERE's MY QUESTION: Which of my gear sets R better suited for the hill's?

CAAD9-6D
Crank= 53/39 teeth
Rear Cog= 12-26 teeth

CAAD9-4C
Crank= 50/34 teeth
Rear Cog= 12-27 teeth

I'm confused. Some of the cyclest @ work R telling me the 6-D (taller gears) will be the easy ones to pedal. They R saying that's the one I want to take to the hills. I think they R as confused as I.
What I see/feel when riding is: When I drop to the smaller ring set on my crank, it make it easier for me to climb. Therefore "TO ME" it figures to be CAAD9-4C, Crank= 50/34 teeth, Rear Cog= 12-27 teeth.

I'm sorry if I have brought a rudimentary question to the party.

Thanks Much
Ab