If you know about networks, it is flawless and extremely value for money.
If you don't know, it is not user friendly at all and I wouldn't recommend it at all to someone who doesn't know.

In the router world, it's not even plug & play, so not that either.

For those who know, it gives incredible capabilities for their money.
I really liked the flexibility it provides in VLANs and firewall rules

Whatever you say about this Mikrotik is not enough.
Excellent. It is fast. It has not caused any problems in the network compared to the TP-LINK ER605, which used to freeze for a few seconds.
It has a flawlessly working VPN set up on it.
The mobile application allows you to control it from there.

It is used in small hotels (50 - 200 clients/10-15 AP's) with absolute success, without ever freezing!

Excellent machine! I use it as a router/firewall/vpn.
The Mikrotik runs perfectly on it.
I have 3 LANs connected to it and it works flawlessly...
From what I've seen, it can route up to 500mbit.

Excellent value for money. Uptime 3.5 months and no issues. Get rid of your provider's router and save yourself. Difficult to configure, not for beginners. However, there are many guides available on the internet for assistance. If someone finds it challenging and doesn't want/can't deal with it, flash it with OpenWRT.

Mikrotik with Router OS can do incredible things compared to their cost.
The configuration is not simple, but it is open to all types of networks.
Load balance, scripts, automation, PoE, and many more.

Flawless. It manages 32 IPs that communicate seamlessly with each other and with the internet. No lag or freezing

Update summer 2024: It now works at a speed of 200Mbps and supports 3 WiFi6 APs. Even with QoS, it doesn't experience any issues with multiple users consuming high bandwidth and 2 IPSec tunnels.

I have installed it in a small hotel with 12 rooms and it also provides coverage for the store where I work. I have implemented QoS for fair queueing and to reduce bufferbloat. I am amazed at how effectively it can distribute the connection to so many users on a line that only reaches 15.5Mbps. Honestly, it never gets stuck, I never experience lag when loading pages or watching videos, and I didn't need to restart it once throughout the summer.
I believe it performs significantly better than the equivalent Ubiquiti Edgerouter X.
The only downside is that it doesn't have PoE, but there is another model with active PoE, which makes it ideal if you need to connect more than 1 access point.
Truly exceptional, but you need to have good knowledge in the field

It is worth its money and more. It requires some technical knowledge and network knowledge, but in 2-3 hours I was able to replace the NetGear R6300 as an intermediate router with the provider's modem/router, enabling VPN and various other features, achieving a 10% improvement in ping times and speeds.

UPDATE: After 1 year, and having 2 of them in my possession, I could say that it is one of the most reliable, value for money purchases I have made. I have connected 2 networks together via GRE-TUNNEL, both with dynamic addresses, and IGMP Proxy/PMI between the networks, allowing me to access media servers/DLNA/receivers, etc. from one network to the other. Something I have not yet been able to accomplish is prioritizing bandwidth based on the type of package.

It requires some extra knowledge to set it up the way you want it... but then it works wonders.
Very fast, no lag even with all 4 ports occupied by AP UNIFI with multiple queues and captive portal.

IPsec Hardware encryption, fast CPU, and 256MB RAM were the reasons I chose this specific router. The speed with 2 IPsec channels, a few simple queues, and port mirroring is remarkable! It requires some familiarity for proper configuration, but it has nothing to envy from similar Cisco, fortigate, etc