Ed,
I have not ridden any of these bikes so I can't really offer any comparison. My primary LBS carries Specialized so I have seen the Sirrus and consider it a very nice bike. My LBS buddies are pretty high on it. For one thing it is very close to a true road bike except for the flat bar. All of the bikes you mention are good bikes and any of them will serve you well for years. The main things is to get one that fits. Hopefully your LBS can help you with that.
Regards,
Raymond