I love mine. It is my second one -- I wore the first one out. I got that one in the 1990s.
Most, if not all will do containers. Some units come with containers, but cheaper models do not. However, you can buy a variety of containers separately. You can even get attachments for Mason jars. I have them. They were not expensive, and work well.
I don't personally see the point in reusable bags. They seem like a cleaning hassle. For freezine meats and other foods, the single use bags make more sense. If I do want to open a bag, take some things out (such as frozen veggies), I make a longer bag than needed from a roll of bag material, so I can have extra room at one end to cut the bag open, take some veggies out, and still have plenty of room to reseal the bag. I hope that makes sense.
There is always a handful of Foodsaver machines on sale at the Foodsaver web site. When I bought my current unit, it was marked down something like 40-percent.
More questions? Ask away. I've got a good 25 years of Foodsaver experience under my belt.
CD