Ready to buy new road bike questions

[runningteach]

I have been looking to upgrade bikes. Right now I am riding a Specialized Dolce Sport 2004. It is a good bike but as I said I would like to get another. I am happy with the Specialized. I also have a Trek mountain bike. The bike shop I deal with does not have a lot of bikes to test ride. Today I looked at the Ruby Elite and next week I will go test it out. A Trek Madone is not in the shop (one of the ones I wanted to look at) but they said they would get it for me. I ride a 48 cm Dolce and the Ruby is a 51cm. The guy didn't measure me but had me sit on the Ruby and told me sometimes sizes vary within companies and the 51 might be fine. My leg felt too outstretched on it. Do sizes vary in companies? Ok I measured my inseam and it is approx 28 inches.

I have thought about it and I really would like to keep my purchase around $2500, closer to $2000 and the Ruby is at the lower end. Am I being silly not to test ride a bunch of different bikes? The guy did show me Cannondales in the men's section when I mentioned them to but he said he doesn't get a lot of women looking at the Synapse. My Dolce was just in for a tuneup and a new fitting because of seat issues and the shop put me on a trainer and adjusted me based on them looking at me ride. Is that typical? I thought they would get measurements but they didn't? I like the shop and would like to stay with them but not sure if I should look elsewhere.

The Madone 4.7 has rival components and the Ruby has 105s. Are the 105s good enough or should I spend the extra money? So many decisions.

I ride about an hour a day and like longer rides but due to an illness cannot do the longer ones right now. I ride about 6 days a week at this time. My main exercise has been running but I am sidelined from it at the moment and might be indefinitely.

Thanks for your advice
Jeannie