Might I add that if you are not sure if you want a Hybrid or a Rodie... why not go rent each type of bike and take 'em for a test drive.
My boyfriend wasn't sure if he wanted a Hybrid or a Rodie... and after a few rentals, he knew that a Rodie was for him.
You certainly don't want to buy a Hybrid, just because it's cheaper... only to find out that you want a road bike.
Keep in mind that if you want to do group rides with groups, you will probably need a road bike to keep up, unless it's a really slow group.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"