Charles Garnier Paris 1901
They have been very helpful with solving all of my problems so far - I wish the bulk individual discount upload wasn't hidden behind the highest paywall, but it was able to do everything I needed it to do.
Foam Fab Supply
Waited over 2 weeks for integration that never happened. If this is standard support, what happens when we have a serious issue? Not recommended.
UPDATE : Support was responding to an email I was not communicating with. App not compatible with theme unfortunately. Customer service did their best.