I have a set of each on different cars:
Accurate: factory correct, so bent with crimps, went on without any issues, been on for 15+ years, sounds fantastic. Looks like a giant price increase since I purchased years ago.
Waldron: factory correct, so bent with crimps, have yet to install, adding all of the clamps/hangers/gaskets adds up fast, call to make sure you have selected everything correctly.
TTI: factory looking, comes with everything, need to trim pipes from collectors to mufflers to length ('62 you need to fab your own collectors from pieces they provide).
All 3, buy direct, call them first.
I had an issue with TTI and they were amazing with their response.
Both Accurate and Waldron were great on the phone.