I was in a discussion about this topic last night with some fellow backpackers at a local camp. I used to use freezer ziploc brand bags exclusively due to their weight. Someone (I think on this board) mentioned the weight of ziplocs. After some weighing and testing I've stopped using the ziplocs and have gone to lighter generic zips and slider zips both for storage and boiling water in a bag cooking. I've never had a problem with water leaks. By my scale the quart ziplocs are .50oz, the slider zips (Hefty brand) are .21oz and the generic zips .11oz. I usually use 3-4 bags a day for food (breakfast, snacks, lunch & dinner). If you're carrying 5 days of food the bag weights can add up. Possibly trivial to some but important to my old body.
Regarding getting holes in the bags, I put a pinhole in my bags near the the opening on purpose. It's amazing how much trapped air there is. When using a bear canister where space is at a premium it can become the difference between carrying 6 days or 5 days of food.
The one food item I never pack in a single plastic bag with a pinhole or not is coffee. The smell of it will permeate everything. I usually double bag my coffee or use an opsack