Just an update, if anyone is interested.

I got a second opinion from Cleveland Clinic, it concurred with the opinion of the primary cardiologists. For what it's worth, it was actually an online consultation using the reports, stress test results, holter monitor strips, ECG, and sonogram from the primary cardiologists. I also went to a UVa Cardiology seminar on pacemakers and implantable defibrillators. They're doing some neat stuff, but it's oriented towards people in much more at risk than me. I'll be gettng the pacemaker implanted this Tuesday.