I’ve been installing Aruba switches at several locations throughout my company and don’t have any complaints. Can’t speak on the cloud features as I do not use them. GUI is fine, it allows me to do what I need.

I’ve used their switches and access points extensively. Great stuff IMO. As someone else said, they’re similar to Cisco in syntax.

They also have all the high end features you’d need if you’re comparing to cicso and juniper.