I've personally been using several models, T500, T510, T60, T61, X200, X201. Nothing beats them in reliability, battery life, and general toughness.
Unless you show me a laptop that you can kick trough the air into a wall as hard as you can, then pick it up dust it off and continue working as if nothing happened.
All business class laptops are coated with a black non-shiny rubbery surface so they don't slip from you're sweaty hands regardless how you hold them.