This is a good video comparing the sounds of different drum machines. Being a bit of a drum machine nut, it's great to hear their variations.
00:07: Roland AIRA TR-8
01:58: Korg Volca Beats
03:29: MFB Tanzbar
05:11: MFB 522
06:22: Vermona DRM1 mkIII
08:18: Nord Drum 2 and Nord Beat
09:40: Elektron Machinedrum
12:31: TipTop Audio: BD808, BD909, SD808, Hats808, Hats909, 909CP
14:02: BKE Beat Thang
