Hi and welcome to the club!
IMO Doing price comparisons based on what others paid and using that info as a negotiating tool can be tricky. A lot depends on where you are buying (e.g buying from a local dealer and trying to use a price comparison from another state etc....). If you will be financing through the dealer, your credit score can play a role too. Trade-ins can affect it also. That being said, price comparisons from others can be useful in determining how much dealers are willing to negotiate on the model you want. I have found that dealer/sales recommendations are very useful. I myself have purchased three Subies ('14 Crosstrek, '15 Legacy and '16 Forester XT) from the same sales person and feel I got really fair deals out of it. Have you tried any online price quoting services yet (Truecar etc.....)?
"The secrecy of my job prevents me from knowing what I'm doing."