I have a friend who test rode a number of bikes and never heard of Jamis before the LBS showed him one. He took it for a spin and instantly fell in love with it. For him, everything about it was just right.
There are a number of nice bikes in that line. Note that some have a carbon fork (the Aurora does not) which can be nice for absorbing road shock.
Since you intend to keep your current bike for utilitarian rides, keep in mind the intended use for the new bike. Are fender and rack mounts a necessity? Do you intend to keep things light and take it out for "fitness" rides vs. commuting rides? Is a zippy bike what you're after? Something solid? Do you prefer stiff or compliant? If you don't know the answer to those questions - the answers may become more clear as you ride a few.
You might want to bring a notebook with you so you can record you impressions of each (before you forget them), noting the specs of each. You may like the ride a steel fork on a steel frame. Or, you may prefer a carbon fork. Only you can make that call.