I can completely relate to your experience. I struggled with a Foodsaver for years as well, and eventually resorted to using two layers of commercial poly film and freezer paper to get better results. I had been eyeing chamber sealers for quite some time, especially at the Sportsman show where a local vendor had a booth each year. About two years ago, I decided to get serious and found a Promax vacuum sealer on Craigslist. Initially, I was concerned that I might be investing in a white elephant or a boat anchor, but I couldn't be happier with my decision.
I use my Promax vacuum sealer at least once a week, and with the low cost of bags (I bought boxes of 5000 online), I even use it for short-term storage. The unit came with a sticker from “Macgregor Marketing” in Portland for service, and it's built in the US with headquarters in Los Angeles. When I had a question about its functionality (since it didn't come with a manual), I looked up the company and called customer service. To my surprise, I received a callback in less than 15 minutes from a knowledgeable and helpful representative who provided me with his direct number for any future issues or parts needs.
Given the current price of food, I seal everything to avoid waste, and the quality is noticeably better. I even bought a sous vide machine off Craigslist, which pairs perfectly with the vacuum sealer. For instance, I can prepare 4 lbs of chicken wings with seasoning or sauce, seal them up, and cook them in water at 155°F for 2-2.5 hours. The meat comes out falling-off-the-bone tender, and a quick broil crisps up the edges perfectly. Leftovers get vacuum packed and make great snacks on the boat.
The versatility of the Promax vacuum sealer extends beyond food. I seal up paperwork for the boat with a rigid cardboard backing to keep it dry, and extra packs of hooks for long-term storage away from moisture. I’ve even sealed garden seeds and medications bought in Mexico for safe storage. For camping or hunting trips, I seal packets of coffee, sugar, and spices to reduce packaging and weight. Bottom line: the Promax vacuum sealer is one of my best Craigslist finds and one of the smartest purchases I've made in general.