+1 bosch. Had the CST one and had issues. Returned to Home Depot and bought the less expensive Bosch, never have issues. Also have a $800+ Bosch rotary self leveling laser that use on lager jobs that kicks ass. But I'm afraid to take it out of the shop so it's lives on a shelf most of the time.
If you don't stop and look around once in a while, life will pass you by.