Well, I am a 5+ loyal customer to them, I failed tons of times hosting my websites (in the past) before I found them by reading their review on some of the review hubs.
For real? Nothing at all, they are awesome, cannot find anything bad at all.
Try them with no questions to ask. you'll get everything you need! even when others fail to give you a real support and tell you please hire a developer, they can investigate and help you from deep heart.
Well, as I stated before, I failed to run my business website(s) successfully online before due to bad hosting providers which I tried before I found SiteGround.
I always facing site down alerts
I always get money lost
I always get a bad online reputation due to a service cut.
Now, with SiteGround = Nothing of this anymore.
I get very fast hosting
I get reliable hardware (for heavy traffic and complex SQL queries).
I get 24/7/356 uptime server.