I have the wireless G700. And for more than just use in Osu!, I like it a lot. Charge it while sleeping and game while awake. It is possible it is holding me back in response time but in all mouse uses considered, I'm sticking with it over wired. It's nice to pull my mouse all around without making sure I have the slack I need or pushing against extra slack.
SPOILER
And what MMzz said. If your are really looking to cut down on the dilution of your mental processes by an unintuitive middle-man aka peripheral, buy a tablet. It's the most intuitive choice. Behind direct mind control.
Which we are actually getting closer to accomplishing. There was a demo where a guy was controlling the new windows 8 with his eyes. Imagine playing osu! with your eyes and/or brain directly.
That would blow all other peripherals out of the water in terms of intuitive effectiveness. Because it would be your direct mental output. If you still did bad after that, you could only blame it on your "bad brain".
Which we are actually getting closer to accomplishing. There was a demo where a guy was controlling the new windows 8 with his eyes. Imagine playing osu! with your eyes and/or brain directly.
That would blow all other peripherals out of the water in terms of intuitive effectiveness. Because it would be your direct mental output. If you still did bad after that, you could only blame it on your "bad brain".