I don't trust Bitmain in the slightest, no new product they bring out will overcome their very poor business ethics.
Ja your experience with them truly sucks. Thankfully most people fair much better.
The T9 on order will make it 82 Ants I've gotten since 2014 and to date exactly 4 boards failed. 1 from an old s7, 1 from a R4 batch-6 failed after 24hrs and 2 s9 boards 1 a batch 1 the other batch 12, both failed Nov-Dec last year.