I purchased both this, and the "normal" edition. Ropponmatsu Ver. 2 barely appears in the Excel Saga anime, but she's such a charmingly annoying character, and so cute, I had to have them.
The figure is very highly detailed, from the puckered around the knee stockings, to the eyes, (though the color of the eyes isn't quite right). The hair color on this version is mostly white, which is just as it should be on the 'special color' version.
Her outfit is a pearly white semi-transparent material. Thought I'd make note of this, you can see her navel through it, but nothing more, so it's not 'adult' natured or anything. It's pretty glossy, unlike the normal version, so really reflects light well.
She doesn't quite 'hold' to her base well, so some care must be taking when displaying or she'll fall off. Same goes for the removable booster pack. If you have a cat as I do, or your home is shaken by neighbors or passing trucks, be prepared to see it fall once in a while. Fortunately, the figure is well constructed and durable, with one small caveat.
The little cable that comes off the back of her 'cat ear' is poorly mounted. Both of mine came off their repective figures on the very first day I got them. I'd recommend having a tube of crazy glue handy to put them back on, as unless you put them in a closed display box, there's a big chance you'll also have yours break off. If I didn't know better, I'd guess they weren't attached with anything more than 1mm of weak plastic, they cannot take any impact at all.
That said, since crazy glue fixed them stronger than the original, I'm not going to deduct much for this one weakness.
Overall, especially considering the price, this figure is a gem for anyone who thought Ropponmatsu Version 2 was a sweet character. And not a bad deal for anyone who just likes cute characters, this one's cute, and there's no denying that!