I love my Acer CB5-571. It has a Celeron 3205U processor (Octane score of around 14000), 4 GB RAM, full HD 15.6" screen (which has excellent image quality), great keyboard, good speakers. I got it for around $180 refurbished on the Acer eBay store, but you can often find it new for around $220-230 if it's on sale. There's an i5 version which is even faster, but I think it goes for more like $300-400. The CB5 is on the list of Chromebooks that are supposed to get Android app support.
Thanks for the remommendation. I got the Acer CB5-571, and I'm very happy with it.
Now my old laptop have been retired, and I'm now completly Windows-free