Best tablet for under £350?

im pretty clued up about mobile phones and their specs but I'm absolutely clueless when it comes to tablets. The last tab I bought was the Nexus 9 yonks ago! What's the best tablet for under £350. It's just for general use such as YouTube and Browsing but needs to be fairly nippy. Can't stand laggy navigation around menus and browsing. I'm open to any brands. Thanks!