It is certainly an advantage to be riding a bike with aerobars, in a triathlon. You can purchase clip-on bars for your current (road) bike, but recognise that as soon as you do, you will need to make adjustments, so that you are in an appropriate position, with respect to comfort, power and aerodynamics (in that order). In the standard road bike situation, you will likey need a forward seat post to achieve this.
If you were to purchase a new triathlon bike, which typically comes with aerobars, aero shifting and forward (seat) positioning, you will still need to have the bike "fitted" for optimum performance. You can purchase off-the-shelf tri-bikes with aero wheels, at quite reasonable prices. Shop around - then have the bike fitted by a professional.
This can be said about most things in our sport - Unless you have the fundimentals (of the sport) mastered, you will not likely yeild the benefits of the "dream" set-up.
Since you asked - my dream bike is the 2008 Orbea Ordu - see it at:
http://www.orbea-usa.com/fly.aspx?mid=a300&layout=viewproduct&taxid=532
CoachKev |