I have astoundingly few POTJ figures, and am looking to buy some more in the future. As it is I own 4 and have two favories
Death Star Escape Han is purely for kitbash fodder, and while she's a fairly good figure, Bespin Escape Leia (what's with all the escaping? In 2000 it was escaping, in 2006 it's battles, I guess) is not quite a favorite.
While FX-7 isn't the most exciting character ever, I have to admit it'd be hard to make a better version of him. Each and every arm articulated with two joints! And the turning middle and removeable upper arm. This figure is great; it makes an "interesting prop" character fun, and is a perfect and complete representation of him. Can't ask for much more.
Millenium Falcon Mechanic Chewbacca, while rereleased almost as much as Cantina Han, is a pretty good figure and made great strides in Chewie sculpting and height. He's multipurpose and looks pretty good. He's been outdone more than once since, but he's the best Chewbacca in my collection so far and I like him.
But overall the POTJ line does seem to be quite good and made a lot of progress for SW figures overall. About the only bad thing I can say for it is the (in my unpopular opinion) slightly goofy packaging and line name, but being a loose collector it doesn't trouble me. Actually, I've never held a POTJ card in my hands, unless I did back when they were new and in that case I put it back- don't remember.