Walkera is nothing more than a cheap copycat company. They've been doing this for years with their helicopters. They wait for Blade to release something and then they copy it but it's always an inferior product.
So... buy at your own risk.
I echo these sentiments. I started my foray into droning with the Walkera QR-X350 because it was within my budget range at the time. Little did I know I'd be getting sucked into dozens of hours of:
1) troubleshooting to get it to operate in all of its published functionality.
2) significant repairs due to crashes resulting from MAJOR hardware malfunctions at no fault of mine (it literally dropped out of the sky on more than one occasion).
3) add-ons and upgrades to achieve the same built-in functionality on a stock Phantom.
And because I was so vested in the other Walkera heli products as well (which all operated on the same transmitter, which I liked) I kept buying replacement parts (including an entire quad once).
So. Much. Trouble.
And because Walkera is a Chinese company with their culture of warranty policies, forget about making a claim. Based on the forums I didn't even bother. Seemed cheaper to just repair yourself or get a new one. BTW, good luck finding manuals that make much sense.
In sum, I'm glad I bought the Walkera Phantom-knockoff because it confirmed that I loved flying drones and led me to a Mavic purchase. Also, I learned a LOT about drones and all the integrated technologies from having worked on mine for so many hours. In many ways it was a labor of love. But what started out as a $400 initial purchase I ended up spending probably twice that for a really poorly performing product. Granted it's sort of unfair to compare such different generations of product but if the Mavic is a 10 (and I think it absolutely is) then the QR X350 is a 3. And if I had to speculate, this new quad of theirs is a 6 or 7 at best. And if you lose it or crash it, don't expect any useful customer service from this Chinese company who knows they're a world away from any obligations to you (you think DJI is bad you've no idea).
If you're going to buy Walkera, get their cheaper helis and call it a loss if they break or malfunction. That's where their value lies. Their products are often a lot cheaper than their copycat equivalents because of their lack of support and warranty.