We prefer the 2000 loop. Yes, it is further from the pool, but in our experience, it was quieter than the 1500 loop (the opposite of a pp, so I suppose it would really depend on the other campers at that time). Also, the sites are bigger. The one time we were put in 1500, our tent barely fit. We also had less shade.
Again, all of these things are dependent upon your fellow campers, which site you land on, and your personal set up. For us, we prefer 2000