I have the last one, and its almost perfect!
I have 1 tiny problem with it, and that is the blue light is very bright!
But thats just a minor annoyance!
Also when I purchased this one I got a free battery with it, looks like he sells them separately now
I really like the first one, but the lack of 2nd battery charging option makes it a no go for me, I like the fact you can also plug in a USB cable as well the wall charger.