i have the snap on super low entry one and its been used and abused for about five years and only gone wrong after it was pumped upside down and ended up drawing a load of air in (not by me), it dropped with a car on it and buggered one of the seals so iv`e got a new one on the way from snappy for free.
it does weigh a bit though and i found that if its unsecured in the back of a car with a flat boot floor it will punch a hole in the side of the boot
I bought this the other day, not the lightest one going, but hopefully means a bit more heavy duty, good price and really good minimum entry and maximum height