Thank you Darwin....I don't quite understand some of the biking lingo you mention...but I googled it and I understand it more.

My bike is very heavy and I ride it on the hardest setting the whole 20 miles...it's like I am in a spinning class (hard to pedal). We want to ride more miles at a faster pace, that is why we are looking to get a new bike for me.

Today I tried the Trek 7.2 and I like it...just trying to decide if we should get the 7.3. The specialized Sirrus/Vita felt too much like a road bike.