Chavvy

Hi there, I'm amidst of purchasing a hybrid bike for commuting and possibly something which will motivate me to collect some milage over the weekend. I am probably best described as a novice cyclist, however I can run and was a national swimmer a number of years ago and the idea of triathlon does interest me. I thought a hybrid would be the best for my needs as the idea of a drop handle road bike seems very intimidating and a bit much to be seen with at work. I've found 2 bikes which have interested me, the first is the Giant Fastroad SL1/0 or the Pinarello Treviso. Which one would you buy?

Thanks