To the OP,
I recently bought a Targus stylus from my school's book store (Apple section). I had been researching styluses for awhile, but decided to just pick one up locally just in case I wanted to return it.
My uses? Well, I'm an electrical engineering student, so the ability to simply pull up a notetaking app (I highly recommend x 10000 the application called UPAD) and draw circuits, analyze some digital logic designs, and knock out some diff-eq problem sets without reaching for different notebooks, folders, computer (for class PDFs), etc is amazing. I feel like I've exponentially increased my organization and productivity with my iPad 2 + stylus.
So, for me, I'd totally recommend it... but it comes down to what you'd use it for. I rarely use it for playing games or web browsing (though it's always hooked to my iPad case, just in case the time comes to make use of it), but for taking notes and doing school work, definitely. I also like to draw, so it's ridiculously convenient and fun to just start doodling on different types of "paper", with different widths, stroke-types, colors, etc.
As for what I think of this Targus stylus: It's okay. It's my first attempt at using a stylus on a capacitive touchscreen, so I wasn't sure what to expect, but I've adapted to it and can write/draw pretty well with it. To be honest though, the point is a little squishy (though rubber) and sometimes it's difficult to continue a stroke on a previous stroke (like, lining the stylus up). It's also a little on the short side (shorter than your average writing utensil) and a little light. The texture is nice though. But I'm looking into another stylus... perhaps an Acase 2nd gen (for note taking) or an oStylus (for drawing/sketching). We'll see, we'll see.
Cheers,
KP