And I'd like some help please!

Ideally, my budget is around $800. This will be primarily for fitness, but I'll probably do some centuries and possibly a duathlon.

Here is what I'm looking at :
Fuji Finest 2.0
Giant Avail 3
Giant Defy 3
Trek 1.2
Specialized Allez

Any opinions? Or other suggestions? I could go a little higher on the price. Does anyone have any experience with these bikes? Would they work well for what I want.

Off the topic, but I'm totally digging this site. I'll be around often.