The lady sounds like she was a good sales person. It does a bike shop little good to send a customer out the door having purchased a bike he or she ends up not liking. It's in the shop's best interest to facilitate a good marriage between riders and bikes. You "time to think about it" will be much richer if included in what you are thinking about is how one bike handled/felt compared to another, based on an actual rides of the bike considered.
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A conclusion is the place where you got tired of thinking. - S. Wright
Favorite rides in the stable: Indy Fab CJ Ti - Colnago MXL - S-Works Roubaix - Habanero Team Issue - Jamis Eclipse carbon/831