I have a waring chamber vacuum sealer I love it took some getting use to . I Have had 4-5 food saver sealers the sealers were not that bad but the price of the bags was a killer and availability . The difference between a regular sealer and a chamber sealer is like black and white. So much to list how long you can seal the price of bags the quality of the seal time after time I could go on and on my chamber sealer the chamber is not that big they say you can seal up to an 11’’ bag but I can seal up to a 13 1/2 ‘’ Bag. the Vac Master I think is probably top of the line but for the price the waring is a great machine. I have two things I wish it had though is one a place to wrap the cord second is that it did not run as long just to make a bag but I use a old $99 dollar food saver to make my bags and save wear and tare on my chamber sealer.