i own the rapid 3, its a great bike. The defy is quite similar and would be considered more comfortable endurance riding road bike. I'm almost your exact size 6'3" and I go between 230 and 250lbs My older brother is 6' 5" and recently bought the defy, and did the MS150 ride in rhode island on it. He is in terrible shape and weighs upwards of 300lbs he hasn't had any problems with the bike.

I would advise you to stay away from the flatbar because it sounds like you do some decent amounts of riding and I think having the option to get in the drops and be a bit more aerodynamic is nice to have.

BTW, I assume by bad roads in new york, you mean NYC specifically which is also where I live. You will want to put some decent tires on it and probably go with 700x28 c tires. I recently built up a 2nd true road bike that is much racier and it can't even fit the 28 tires so I ride on 25's with no issues using continental gatorskins.

Lastly a cyclocross bike is a decent option as well. its setup like a road bike but built to take bigger tires, it's kinda like a racier hybrid. Personally I hate comfort bikes, they usually have crappy grip shifters, mtb gearing that is way to easy for road riding on flat ground and they are usually heavy as all hell.