Having caught the bug I am looking at getting Focus Izalco Tria 2008 but....I am 5 foot 9 which puts me in between the medium and large. I was advised by Wiggle to go for the medium as " it is better to go for the smaller bike". Not too sure about this, isnt it easier to buy the large and if required get a smaller stem?
Although I know there are no hard and fast rules are there no guide-lines like seat to pedal = 110% of your inside leg (this months cycling plus) for triathlon specific bikes?
This is a problem with the internet, you can't try b4 you buy, yet they make everything look so shiny!