Best Mid-Range Controller

Hey Guys, I'm new to the world of third party controllers, and I need some advice. I saw Linus' new video about best controllers, and it made me realise what I'm missing out on by just using the normal Xbox series controller. I did quite like the look of the X20 that won the showdown but a few of you said that you didn't really like it.

So basically, I'm looking for any controller recommendations. I'm looking around the £50 mark, but if a controller is that much better, I would be maybe willing to go up to £80. Also, I'm in the UK, so please tell me where I'd buy the controller from as I was looking at the X20 and I could only find it on their website and AliExpress, not even on Amazon. I play on PC and would need it in the Xbox style joystick format. With controller, I play on Rocket League mostly, but also on Forza 5 and Minecraft Dungeons and other driving games mostly, but would like it to be useful for any game really. I don't really know what features I would want with it, but I guess nice ones to have for the price range wouldn't hurt. Any help would be great!