I ride a 7.3FX for 70-100 miles and I don't have a problem with discomfort, if everything is adjusted. I haven't ever ridden a road bike so my opinion that it looks uncomfortable is unfounded.

I have a brooks saddle, which is well broken in (~8000 miles on it) and a special handlebar. My bike is WSD and I have a longer stem which brings the handlebar up even more, which is better on my wrists.

I know that if I bought a new bike again, it wouldn't fit perfectly, I'd spend a lot of miles adjusting it like I did my 7.3FX.

That's not to say you shouldn't get a road bike, I just wanted to tell you that if it is discomfort, a new bike alone might not be the answer, or you might be able to fix the problems by making some adjustments to your bike.