Enter Fuel Belt! This clever contraption does several things that attracted me to it. First, it puts the weight lower on the hips rather than high on the back. I think that is a more advantageous position to keep the back relaxed. Second, it distributes the weight so that it is not centralized. Finally, it's different bottles allow for different fluids rather than being the same necessitated by one container.

For a 17 mile run I filled the two back containers (the containers hold 8 ounces) with Powerade, and the front two with water. I put a gel packet in the zip container. The zip container is very small and will not hold much else. Off I set on the run! The first thing I noticed was that the weight in the back, albeit small; gave the sensation that the belt was going to pull my shorts off. Now I must say that I don't have large buttocks so this may be not an issue for most people. It just seemed to ride lower than I expected.
I was about five miles into the run when I first took a drink. It was awkward getting the bottle out of the back, and more awkward getting it in. It is likely a learned skill that gets better over time. Because the bottles are held in place by an elastic strap pocket, it's a tricky balancing act between being too loose and having the bottles come out, and being too tight where it is difficult to get them back in.
There was a small amount of sloshing when consuming some but not all of the fluid, but nothing too egregious. I can live with that. The sizing was too black and white. I am approximately a 33 inch waist. The medium was too small, and I had to exchange it. The large is nearly too big.
The price is fairly expense at $44.95, but overall I think the cost was worth it and I would recommend it.