Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Professional-grade sander

This is one of the best tools I own, but then Porter Cable seldom disappoints me. Before buying this one, I used a 1/2-sheet sander for 80 and 100 grit sanding, then switched to a 1/4 sheet pad sander for the 150 and 220 grits. Now I can sand faster with only the 333P. Just slap a hook and loop 100-grit sanding disc on and this baby will take off the wood in a hurry. Takes about 5 seconds to switch discs to go to the next grit. Vibration is low, balance is good, noise is tolerable. As with all sanders, you should always wear hearing protection and some type of dust filtration for your lungs and sinuses. Just common sense folks! Good job Porter Cable. You're right up there with my Bosch sliding compound mitre saw.