I'd suggest adding the LG PH300. It's $379 on Amazon but, can be found as low as $250 on eBay if you go manufacturer refurbished or used. Heck, this one is only $150 which is a complete steal. I bought one for $250 and love it.
The LG PH300 has a lot going for it. It's cheaper than it's competitors, it's as about as long as a smartphone and is about half as tall as a cheap logitech 2.0 speaker. It's 720p HD, 300 lumens, very portable, HDMI with MHL, can do a 100" screen from about 12.5 ft away. Has a 2 1/2 hour battery, rated for 30,000 hours. Here are a few videos I found from youtube, none are mine:
Guy doing some testing videos, he has quite a few
testing a blu-ray animation movie