In my experience, no, they're not. Their wireless gear is great but when it comes to wired, I'd avoid them. There's a serious bug [0] on the ER-X-SFP that's been around for over a year without any serious action from Ubiquiti. Their support when I tried to get an RMA for said issue was utterly abysmal.
[0]: https://community.ubnt.com/t5/EdgeRouter/EdgeRouter-X-SFP-le...