The Targus stylus I picked up from BestBuy for ~$16 works great; though I have no comparison with others.
At home I use it for drawing and quick sketches (typically with SketchBook) and at work it's used for notes in PenUltimate and filling in PDF forms. With a large, somewhat squishy tip, it takes a bit of practice to be precise, but has worked fine for the past month and a half for me.
It does look cool. We're buying one now. $25 includes worldwide shipping.
I'm in for a pair at $50 including world wide shipping too!
Hopefully this will arrive before the Ipad 3 arrives - lol.
This will begin the full on assault on eliminating paper for and taking class notes etc.
I backed the Estylo on Kickstarter, the project received over 10x the funding asked for. They have started to delivered (to some). The Estylo isn't available in stores (yet- if ever), but it is an interesting tool compared to everything else available.
Made of painted wood. Very light, very pencil-like, and almost the length of a real pencil. Both ends work. Very nice design, the package alone was a thing of beauty.
I think this product is quite good but will probably fail due to the business side of the venture. Some could show up intermittently on eBay in a few weeks-to-months, or maybe directly from the maker.