I have used the G604 for 6 years and the 6 side buttons are perfect for me - not too few, not too many, just right. Plus Bluetooth & Lightspeed to switch between devices.
I’ve printed it a replacement for its rubber cover, but now I need to look at cleaning/replacing the switches as they are starting to double click.
I bought the mouse for ~$68 on sale, the resale market for the mouse is nuts.
NWN is one of (if not my all time) favourite game, both offline and online.
I played through the NWN2 SP campaign and thoroughly enjoyed it ( though I started and never finished the final expansion.)
The biggest disappointment for me was the changes to multiplayer that made it a lot harder to drop into servers. If I am recalling correctly, you had to pre-download (outside of the game) the meshes for landscapes before joining a server. It was a huge barrier to entry, and even dedicated communities that tried to move from 1 over to 2, faltered.