i too have a snap on one its the old style one approx 5 years old never had a problem with it , the lads at work have the new one and have nowt but trouble with batterys and chargers plus they always borrow mine when thiers wont undo something lol!

i also have an ingersol rand (i think thats spelt right) one its nearly as good as the snap on and was bought off ebay for 180 second hand with two batterys and some impact sockets, i dont know how much they are new tho