I ended up getting the v3840 using the coupon that was on this thread. I have been vacuuming everything in site!!! It's a strong, high quality machine and the bags are of very good quality. This is meant for long time sealing and not something that would lose vacuum within a few days, weeks or even months. The plastic is also heavy and won't tear. As I said before, I use it for Sous Vide as well as cheese and it is safe for cooking in it! (it is made for cooking so no chemicals go into your food). It has multiple settings for soft or hard food, dry or wet food so you can seal gentle or seal very hard. It works with pre-made bags AND with rolls that let you create your own bag in your desirable size (there is a built in apparatus to place the roll and cut it with a guillotine style slider - very nice!) It also has a retractable bag opener (cutter) and a retractable hose attachment that connect to hard vacuum containers that you can use for storage or marinating. It's the best thing if you don't want to spend $1000 on a commercial vacuum chamber. I couldn't be happier. The only drawback is the size - made for the suburban American person with a 2-car garage and a kitchen the size of an Olympic pool. I cannot store it in my New York City kitchen.
As for 220V - just use a power inverter/converter. I go to Europe and Israel a lot and I always take them with me. Just make sure to buy a good quality one: good brand, certified (such as ISO9000, UL Listed, CE etc.) built-in fuse. Make sure it converts the voltage from 220V-250V to 100v-110v as well as the Herzage from 50Hz to 60Hz -and make sure it has enough amperage to support what you are connecting to it. Most of these units are good and trustworthy, but some cheap ones can malfunction and burn your unit.
Like many appliances, it is possible that FoodSaver brand is sold under a different name in different countries. FoodSaver is a one of many subsidiary brands of consumer appliance giant Jarden. Other Jarden brands you probably know may include Sunbeam, Crock Pot, Bionaire, Rival, Mr. Coffee, Holmes, VillaWare, Oster (and others). Each one of these brands have additional brands under it. FoodSaver is part of the Sunbeam brand for example. A Vaccum sealer similar in power and components to the basic FoodSaver models is also sold under the Rival brand in some international markert under the name Seal-a-Meal. Where in the world are you? There is probably a local version of it wherever you are