Comparing C64 SID Chips (6581, 8580 & nano SwinSID)

I've recorded audio from 3 of my C64's that have different sound chips in them so you can hear the differences. Look out for Rodland, which goes stupendously wrong using the nano SwinSID. 0:00 Commando 1:04 Creatures 2 2:00 Rodland 2:51 R-Type Game 3:45 R-Type Main 4:20 Turrican I 5:39 Turrican II