Stopped at the LBS on my lunch break to check out a couple items.
Store worker was bored so I picked his brains. I wanted to bang my head on the wall after asking him general questions. Here are some of my questions and his answers:
"Are carbon frames really worth the extra cost over aluminum?"
"Depends on what kind of riding you are going to do"
"I read somewhere that carbon frames give you a more comfortable ride than aluminum, is that true?"
"Depends on the road you are riding on"
"I have a 105 drivetrain with 105 components, just wondering if the Ultegra components are that much better than 105?"
"Depends on what kind of rider you are"
"I don't see very many bikes with bolt holes for racks in the rear and front. How do your customers install racks?"
"Depends on the customer. Everyone does their own thing"
"Is there any significant structural difference between sloping top tubes and straight top tubes?"
"Depends on the rider and how he rides"
"Ok, back to the drivetrain components. As far as durability, does the Ultegra last longer than 105 under normal circumstances?"
"Depends on how well the customer maintains the parts"
"Let's say I have $900 in my pocket and want to buy a road bike with 105 components. Which brand would offer me the best components for the money?"
"Depends on what kind of riding you plan to do"
"Ok, thanks for your time, gotta go now"
I know some of my questions were too general, but I wasn't expecting these kind of answers. Other LBS's would give me their personal opinion, but this guy is pure logic.
I am sure Spock would have been more open than this guy. Still, it is probably better to deal with pure logic instead of pure opinion.