I purchased the more expensive option thinking that it would be more effective than the basic model I had previously and was disappointed to see that it didn't produce a tightly vacuumed pouch. It wasn't terrible, but just didn't take more than 60% of the air out. I also noticed that the sealing was a bit hit and miss. I assumed user error and asked a friend who also has one to take a turn with mine and he claimed that his was the same.