Are you a stylus collector? Do you think just one more stylus might make a material difference with how you use your iPad or iPhone? If you aren’t using the one(s) you have, why do you want to spend another $15-30?
Before you go out and buy another one, consider the updated stylus comparison chart by MacWorld.
They have broken the chart into unconventional styluses, multifunctional styluses and nib styluses.
I got a pogo sketch stylus when they first came out.
Now, I like my Bamboo Stylus the best…But what do I know, I am considering an Adonit jot pro stylus.
Are you a stylus addict?
iPad Notebook 
Unfortunately, I have become a stylus collector. I say unfortunate because most of them are “un”workable and I don’t exactly feel “fortunate” to have them.
The Jot Pro is a very workable stylus but it does have two drawback for me.
One is the angle it which is can work. I often find it not working because the disc cannot pivot as much as I’d seldom times like.
The other, and more serious problem is that, over time, the disc-tip becomes loose and becomes a little sporadic in its responsiveness. This will start to happen after about 2-4 weeks of use (depending on how often it is used). There is a great, simple, inexpensive and extremely effective fix for this though! It brought my Jot back from being left in a cup with other pens, back into my pocket. Here’s the fix:
http://support.adonit.net/entries/20701496-disk-not-sensitive-enough-easy-solution
I would wait until the stylus’ performance starts to drop before putting this “tip” into play.