I've been off the bike for 9 years, and just had double knee replacement. Getting back out there starting in the next few days - once I buy a bike. When I had to stop riding I had a 2003 Trek 5200 postal, which I truly loved and it killed me to sell. When I had to stop riding I was a total nut job, obsessed about speed, doing long rides at 25mph+ avg, making dangerous passes, and treating every ride as if it was a stage at the Tour. Needless to say, I made no real friends in 11 years of riding 4-8 times a week. Wasted years...

So I need a starter bike - and wouldn't you know it, my old Trek is available to purchase. So here is my three choices:
1) Buy my old Trek for $800, because I'm familiar with it and did so many insane things on it
2) Buy a $400 used KHS flite (with ultegra), just in case my knees hate cycling
3) Buy a slightly used Trek Madone or Specialized Allez for right at $1000 and move up to newer technology