I've been considering a chamber vac sealer for a while now Amazon has the Avid Armor USV20 for $324 and the Avid Armor USV32 for $569 (a little bigger chamber). I'm not in the market for an expensive $1000 vac sealer. I wondered if anybody has experience with these or recommends other lower-priced chamber sealers. What are your thoughts? The chamber bags are so much cheaper that they would almost pay for themselves, along with the benefit of being able to vac seal liquids.