I gave Synthetic two fair tries
I gave Synthetic two fair tries, months apart. First early on after they launched, when output quality was already noticeably lower than other providers I use, and again about two months ago, assuming things had matured by then. The quality was still noticeably below what I get elsewhere, to the point the results weren't usable for real work. Their main selling point is being US-hosted, but hosting location doesn't help when the model output itself is the weak part.
When I raised this and asked about a refund, my emails were simply ignored. No reply, no refund, even after I'd paid for a service I couldn't use. That turned a disappointing product into a waste of both money and time.
How they could improve: close the quality gap with the original providers, or be upfront about where the output falls short; actually answer support and refund emails; and offer at least a partial refund when a paying customer clearly can't use the service. I wanted this to work and gave it a second chance. As it stands I can't recommend it.