I'm keen on getting an additional controller for our PS4 Pro, but want to spend as little as possible - we've already got two original controllers, but there are some games that allow for three players I'd like to be able to play with my boys, so it's only for occasional use.

I've seen some of the cheapest ones don't even have all functions (eg, the touch pad), so I'd like to avoid these.

Has anyone experience with knock-off controllers purchased from Ali Express or eBay (and also sold on TM etc)? Are there any you would recommend and/or to avoid?

Here's an example of the ones I've been looking at - it's amazing how they can sell a '100% official' controller for that price! (sarcasm...)

Thanks for any advice.