Help a brother out fellas. Getting into road riding after MTBing for year. Also got two mates getting into it as well. We've got an eye on doing the RTA big ride from Mt Kosiousko next feb. Anyway, we all went into the local and were dismayed to find that they hardly had any road bikes. My mates who know less about bikes than even me made the mistake of saying that they didn't know how to judge a bike but if there was a good reason for spending $5k then they'd spend it. Anyway, yesterday had to get the rear wheel on my mountainbike trued after a blowout (damn things flat spotted and will need to be replaced

). Anwyay, go into the store and what do you think they have on display? Nothing other than a Cannondale Six13 for $5.5k, a Giant TCR 2 Composite for $4.5k and a Specialized Roubaix Comp for $4.5k. Now bugger me but I fell in love with that Specialized on the spot. I know it's twice my budget (haven't had a haggle yet though) but I LOVE it! Now unfortunately for me I can easily afford it but am still wary of spending so much.
So tell me fellas. Any opinions on a Specialized Roubaix Comp? Would I be doing my dough as the money would be better spent on something else? (BTW, most of my riding I want to go fast, but I'll also be going long at the same time on some fairly coarse stoned roads. I'm not racing either, but it could happen in the future if my love affair grows).