I have been to Champions Tour events in NY (Meadowbrook), Kansas City (Tiffany Greens), and Orange County (Newport Beach) for a variety of reasons (business, visiting friends, etc).
If I were planning to go to an event next year, I would base it on a few simple factors:
1 - Ability to play other good golf courses nearby
2 - Proximity to major city and/or some non-golf things to do
3 - Quality/interest of course at which event is being held
To a lesser extent, I would also try to gauge how well the local community supports the event (attendance, buzz, etc) and perhaps take into consideration the quality of the field.
Based on these factors, I would target the following events:
Constellation Senior Players Championship - Fox Chapel GC - Pittsburgh, PA
Encompass Championship - North Shore CC - Chicago, IL
Nature Valley First Tee Open - Pebble Beach