another which bike thread - boardman

verycreativeusername
edited April 2012 in Road buying advice
hey guys, I've decided to invest more in cycling :D and have been looking around for a new bike. I ride a bit of everything (flats, hills, long, short) and have been wondering which bike would suit me better on paper? I average around 38kmph on the flats, and from my understanding, that's when the aero advantage starts taking effect. So I'm split between some aero bikes and some lighter bikes... anyway here's my shortlist:

Boardman AiR
Boardman SLR
BMC Roadracer
Cervelo S2
Lapierre Xelius 400

any others?

I would like to have a one bike do it all, from a day in the hills to a flat time trial