IBM T40. No Sound or WiFi on Windows 7. Both work fine on Scientific & Kali.
Asus Eee. Everything works on both, but the touchpad configuration utility (which was excellent on XP) doesn't work on 7.
Clevo D900T: Had problems getting sound on both Win 7 and CentOS driver didn't install by default. Can't get WiFi to work on either. Can't find a GeForce driver that will install on Win 7, so only get full resolution on Linux.
So for me Linux wins more often than it loses in the driver game.