Pilot 2.1 WSD specs: (Ranked #1)
Frame ZR 9000 Alloy w/TCT Carbon seat stays
Fork Bontrager Satellite Plus, carbon
Shifters Shimano 105 STI, 10 speed w/Bontrager FIT reach adjust
Front Derailleur Shimano 105
Rear Derailleur Shimano Ultegra
Crank Shimano 105 50/39/30
Cassette Shimano 105 12-25, 10 speed
1600 WSD specs: (Ranked #2)
Frame Alpha SLR Aluminum
Fork Bontrager Approved, carbon
Shifters Shimano 105 STI, 10 speed w/Bontrager FIT reach adjust
Front Derailleur Shimano 105
Rear Derailleur Shimano Ultegra
Crank Shimano 105 50/39/30
Cassette Shimano 105, 12-25, 10 speed
Pilot 1.2 WSD specs: (Ranked #3)
Frame Alpha SL Aluminum
Fork Bontrager Satellite Plus, carbon
Shifters Shimano Tiagra STI, 9 speed
Front Derailleur Shimano Tiagra
Rear Derailleur Shimano 105
Crank Bontrager Select 52/42/30
Cassette Shimano HG50 12-25, 9 speed
Well, just looking at the specs... the 2.1 seems to be the best bike. I only say that, because it's full carbon with a 105 and Ultegra mix. This is a bike you can ride for many years. In fact, it's very nice for a beginner component and frame wise.
The 1600 looks good too, except it's not a full carbon bike. It's a great starter bike, but you might be looking for a new frame in a couple of years.
The 1.2 is a pure starter bike. Decent components, but in a couple of years you will probably want to upgrade the frame and components if you start putting some serious time in the saddle.
In the end though, it's all about what you feel comfortable on and enjoy riding.
the seat was soooo much better than the 1.2, and the components are better - worth the extra $$$$ in my opinion.
A seat should never be a determiner on if you buy a bike or not. 9 times out of 10, the seat will be replaced. I don't know many people who actually ride on the stock seat.
You were right to pick the bike based on the better components. That is money well spent.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"