Actually, Rockler DC stuff fits together really well. ID and OD are very consistent with Rocklers connectors. They are the only woodworking store within driving distance for me. When I bought my table saw from them, they had an employee who worked in their store in Orange county but lived closer to my store, and the guy brought the saw up with him and dropped it at the store. Really like to go watch demos on Saturday mornings, well, at least some of them. In a pinch, they even have decent hardwoods in a pinch. Don't have much experience with other suppliers.
The more I do, the less I accomplish.