Cervelo R3 vs TREK Madone 4.7

I ride a 2012 Madone 4.5 and have put about 200 miles on it and I love it...so far.  It's fast, comfortable and does what it needs to. This bike is my upgrade from my Scott S60 that i put 3k miles on so it is a HUGE step up in quality of components and going to full carbon is awesome. Love the bike so far but I've only had it a few weeks.

Those are both very nice bikes.  If you are looking to get into triathlon, however, you may be looking at tri bikes in the near future.  So the question I'd ask is are you willing to spend that much on 2 bikes in a relatively short time frame?   If so, either will be great.  If not, you can get a more-than-adequate road bike for half the price (or less) of those bikes to get yourself started (there's no need to get too hung up on carbon at this stage, either).  Then add a nice tri bike down the road if you've decided to stick with the sport.