Two of my favorites won't work for you:
Manhattan Amateur Classic (MAC)--Big fields in most syllabus and open events, enthusiastic audience, the opportunity to see the best junior and youth couples, great location, great organizers. You can compete and be a VIP at this comp and still pay only about what you would at an average NDCA comp. The lower Manhattan location this past year was less familiar to me than the Columbia University area, but we found a great restaurant.
NJ Dancesport Classic, esp. Spring Fling--Again, big fields, the opportunity to see the best junior and youth couples, great organizers. You can compete and be a VIP at this comp and still only pay what you would at an average NDCA comp.
For comps that have pro-am, my favorites would be:
Ohio Star Ball--Obvious reasons! Large fields, opportunity to see best pro competitors in U.S.
Philly Festival--Great amateur fields, really nice Saturday night, convenient hotel location attached to the Philly Airport, sensible package prices! (Why is this so rare?) Some creative elements, like showcasing different dance forms including wheelchair latin and ballroom, a local salsa group, etc. Great organizers. (I hope that if USA Dance nationals really are going to be in April in B-more that they won't be the same weekend as Philly...anyone know?)
Capital Dancesport--Great pro fields, some very interesting shows, nice location, organizers are John DePalma and Marianne Nicole.
If money, TIME (work and family obligations), and distance were no object, I would also love to do these:
Manhattan
Embassy.
ChaChaMama