Interesting! I thought Universe Cheetor was a repaint; I had no idea he had a different head. I'm almost tempted to track it down now. Thank goodness we were never inflicted with the Transtech Cheetor though.
I miss Beast Machines sometimes. It managed to be mainstream and obscure at the same time, thanks to the TV show being a bit too serious for its target audience and only shown on Fox Kids in the UK. The Maximal toys are generally awful, but I remain a fan of (most) Vehicons that were released in this line.
Actually, Nightscream isn't as bad as I remember. The toy is still too large and can't stand in robot mode, but the transformation is reasonably intuitive and has good quality plastic throughout. I'd like it more if it had a robot head instead of the dead-eyed, floppy-haired features of the TV character.