All similar bikes - although I'd stick to the road bikes with drop bars (the U-shaped bends) rather than straight bars - even if you rarely ride in the drops, they do allow for more hand positions and if you do need to hide from the wind, they will be there for you.

All will be good choices. You will not even come close to exceeding the capabilities of any of these bikes. The Sora shifters are a non-issue unless you've been spoiled by the high-end stuff and are very particular about your shifting. I have Sora on my Defy3 and high-end DA shifters on my race bike, and I'm definitely not losing any speed by using the Sora. To me, it's definitely NOT worth paying over $100 for slightly crisper shifting, but to many on these forums, they're more than willing to drop $1000 to get a hi-end groupset. The Sora shifts accurately and well, and the thumbshifter is a nonissue if you haven't used the other stuff - I actually really like the thumbshifter button now that I've had it for 2 years and would miss it if it was gone.

It'll be subjective what you get, but the main issues will be:
- How much you trust the store
- If the bike is even available in your size in a timely manner, and if you can get some deal on it
- *** How it looks. *** Probably the most important factor between these 3 choices, since performance will be similar.

Enjoy the hammering on the bike, and for real, with those bikes, you will be able to ride against the most competitive roadies (pro) without mechanical handicap if you're strong enough.