These are user features. Snow leopard and mountain lion (as their names might suggest) are all about under the hood refinements. Snow leopard was ten times bett

These are user features. Snow leopard and mountain lion (as their names might suggest) are all about under the hood refinements. Snow leopard was ten times better than leopard, but the most striking new user feature was scrollable stacks (in Dock)! So, don't judge ML too harshly. I used dev versions and they were rock solid (more stable than anything before 10.6.4 or 10.7.1).