Bests & Worsts Reviews from Amazon

my first robot vacuum...WOW! I haven't sat down to program it yet, but i did run it this morning. I vacuumed last night, however the A4S ran for more than 2 hours 15 minutes; i emptied it 3 times. It picked up dirt, dog hair, small twigs, tree bark, and grass...all tracked in by kids/dogs/me. It's fascinating to watch it work...im wonderstruck. I have all wood/tile floors with transition pieces, with a few rugs. It managed all surfaces well, though it did get stuck 1 x under the piano pedals. It might have freed itself, but i helped it along. It found it's way back to its dock without difficulty. My floors look great and I'm really excited about this new addition. I will update if there are any design flaws or other issues. update: 1 day later, I cannot believe how much debris this thing picks up from corners and under furniture. It ate a sock/tissue too, then turned itself off. I removed the sock/tissue and it worked just fine. I swept and vacuumed, but it keeps finding debris, dirt, dog hair, etc.