I've gone through quite a few "food savers" in the end i bought a chamber vac. It's the pump that makes all the difference. Busch rotary is best we can get here. Mine gets used a lot and it never skipped a beat. Most important thing to remember with these units is to change oil once or twice a year to avoid premature diaphragm failiure.
Ctr has some Hancovac chamber vacs that use busch pumps, we use a table top model when packing fish on west coast, great little units.
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