As any Cisco Aironet Access Points, the 3800 model is more for power users than beginners. It is for sure very more complex to maintain and trouble shoot than solutions like Cisco Meraki APs.
By the way, there are a lot of settings that can be customized and it is really interesting for difficult environments like industrial factories.
The 3800 model is also robust so it should stay durable and reliable.
But if you want to use the mesh mode or make a wireless bridge, this model is not appropriate as it is not supported for now.
Ubiquiti is well suited to not just indoor WLAN access, but also outdoors. In fact, the range of the outdoor applications, while maintaining throughput is astonishing. I would say this is not a solution for a 1-5 person small office, due to the costs.
Management of devices has become much simpler with the UNMS application, but personally, I would like to see some AirMax-like devices from their Unifi line where everything could be managed from an Unifi controller.
Most Ubiquiti devices are 24V PoE, which is the bane of my existence. I have had several devices fried when staff plugged into standard 48V PoE. They generally don't fail catastrophically, either. You just get strange issues that are difficult to diagnose and eventually need to replace them.
Devices seem to have trouble with many patch cables/switches. Make sure you certify any patch cables you make and don't over crimp.
Sending devices from the factory with same 192.168.1.20 IP instead of DHCP makes it a pain to bulk-setup devices.
Ubiquiti makes great Access points at various tiers provided far better coverage and throughput than consumer-grade wireless repeaters and routers. We have not had any performance complaints from guests or from the administration who use the wifi on a daily basis.
The Cisco 3802 product performance is excellent. Not only for the speed and range of the wireless it provides, but also for the fact that - when deployed in a large scale environment - the performance does not fail. It provides the same network connectivity for users ranging from 1 to 30-plus concurrent connections.
Ubiquiti's support is basically non-existent by design. However, their forums are a great resource if you are willing to do the research and ask questions. Keep in mind Ubiquiti sells hardware, not support so the responses will be from the community of professionals also using Ubiquiti just like you.
Our selection of Cisco Aironet Access Points versus the Meraki Access Points was entirely on a political basis with our vendor. In the future, we are actually looking to migrate towards the Meraki system. Even though the Meraki feature-set is lacking, we really only require those features, and our cost would be largely cut by this migration. It would be a solid win, but maybe not recommendable to everyone.
We have used products from Netgear, ZyXEL, Cloudmesh, Datto, Mereki, and EnGenius previously often choosing products based on a specific situation, since starting with Ubiquiti [WLAN] we have pretty much stopped [usage] of all other vendors in the networking field and standardized which better allows us to stock spare equipment. Best part is if you need to replace equipment it is easy to swap it out quickly as the controller also acts as a live configuration backup.
Contrary to a solution like the Cisco Meraki access points, the Aironet access points like the 3800 are linked to the Controler. And depending on the version of the controller, it will support only some models of access points.
For big sites, it may be difficult to upgrade the controler to support new ap models like 3800 because we still have old access points.
And it is also the same between new access points and old client devices so it is always a bit tricky.
After that, if the access point model is supported by the controller, it is really simple to install a new one
Users are able to carry on with their work while moving, changing seats, rooms or having an ad-hoc Skype meeting on the way to lunch. It is always hard to justify the value of connectivity but be assured, when it is not working the business impact is immediate.