You can use Foo saver freezer bags from Costco. One of those Foodsaver machine are pretty decent for home use. The drawback is the seal strip eventually wears out and need to replace (it's pretty cheap) and it is more difficult deal with liquid or moist ingredients.
If you go the chamber vacuum system route, it gets expensive (big and heavy.)
Rack of lamb with rosemary and garlic is easy and always a crowd pleaser.