This is arguably better done as a poll, but frankly I'm more interested in the comments, rather than the decision, so I think a thread is better.
Here's the premise:
I don't know about you, but I enjoy riding different bikes. I currently have a Giant Defy 1 (first road bike) and a Trek Madone 5.2. Maybe I'm like the old Mounds/Almond Joy commercial, but sometimes I fell like a nut, sometimes I don't.
In any case, at my current level of riding, I don't feel any need for a groupset above Ultegra, and frankly that's probably overkill - 105 seems fine for the most part. So let's $ limit to the $3k - 4k-ish level. So, here's the question...
If you had a somewhat unlimited budget, and you could only buy 1 bike from each of the 4 "major" brands - Specialized, Cannondale, Trek and Giant - and you had to end up with 2 "racing" geometry bikes and 2 "endurance" geometry bikes, which would you choose? (Note: I'm not trying to start a religious war here. Where I live, these are clearly the 'major" (not necessarily best) brands. I know there are many other great bikes out there, and if I could, I'd have one of each.)
I apologize in advance if this is confusing. Perhaps if I show you my tentative choices, you'll get the idea:
Specialized: Tarmac (race)
Cannondale: Synapse (endurance)
Trek: Madone (race)
Giant: Defy (endurance)
So, where have I gone awry? Certainly the Roubaix, SuperSix Evo, Domane and TCR are good choices.
What say you?