Intermediate TT bike

^This, seriously.

You could get a 15,000 superbike, and have it not fit, and be WAY slower than an entry level bike tri bike that fits properly and puts your body in a more aerodynamic position.

The least aerodynamic part of the system by FAR is the person riding it, not the bike itself.

My bike was $750 used with no wheels.

I have replaced nothing but the chain and cassette as it's worn.

I recently won the last local time trial of the season with it.

Cost means little other than the very pointy end, as opposed to the fit ^_^

I picked up an Orbea Ordu - 2014 w/Ultegra for $2500. As has been said though, that was after meeting with a fitter and determining what some good options were for my build and flexibility. Then back to the fitter post purchase to have the fit dialed in.

Bottom line is there are tons of options in that price range. Start with an understanding of what some good options might be and which geometries are just not right for you. Then find what you like and get it properly fitted. When I got my bike I was with the fitter so long I thought I was going to have to pay rent. We tweaked and adjusted for over four hours. But the bike has always felt great.

Whenever this question comes up 'fit' is always the first consideration everyone mentions. There's a reason for that.

Happy hunting.