I've had my s300i for a week & 1/2. Happy to say all in all, I LOVE this thing. It does a great job cleaning the pool and only a few little things lacking.
1. Out of the box ready....did get the hubs to put the caddy together. He had a small problem getting the stand holes to line up but finally gave it a whack and it snapped into place.
2. It doesn't clean 100% of waterline
3. Seems to like one side of my pool more than the other but eventually cleans the whole thing
4. A tad heavy for a female to pull out of the water when it's full of water
But.....all in all I really love it. It is very well made and the baskets, filters are easy to clean. The iPhone app is easy and fun to use. It's like using a remote control car.
I would recommend this cleaner for sure.