Kuuube (pronounced "cube") is a drawing tablet expert. He does methodical and careful research on drawing tablets. He's a contributor to OpenTabletDriver. I review my content with him and a few others to help ensure accuracy.
You can find him on GitHub: https://github.com/Kuuuube
Here are some Kuuube resources I refer to frequently:
Non-Wacom information
osu! information
Kuuube's tablet buying guide for playing osu!
If you are buying a tablet for osu!, then you need a tablet that is specifically good for osu! And most are not.
The easiest way to find such a tablet is Kuuube's tablet buying guide
Link: https://kuuuube.github.io/buying_guide
This guide is an incredibly well researched by Kuuube. No other tablet guide for osu! will be as helpful as this one.
Tablet enthusiast Kuuube maintains a spreadsheet which provides an extensive list of information on Wacom tablets.
This really is an amazing spreadsheet and you won't find some of this information ANYWHERE else.
https://docs.google.com/spreadsheets/d/125LNzGmidy1gagwYUt12tRhrNdrWFHhWon7kxWY7iWU/edit
The top part of the spreadsheet covers consumer tablets
The bottom part of the spreadsheet covers professional tablets
The models are listed by model identifier (i.e. model number). If you want to see the model name(s) associated with that model hover over the model identifier and a small tooltip will appear with the model name(s).
Some pens have information Kuuube has measured about the pressure range. So for some you will get a good idea about the initial activation force.
Compatible nibs are listed
Compatible pens are listed