First of all excuse the cheesy title! Anyway, picks, as any guitarist knows they will play a big part in your career as a guitarist, never there when you need them but when you don't, there everywhere! So as you can guess, i have owned a lot of picks over the years and finally i have settled on these.
FIrstly they are noticbly smaller than most other standard sized picks and this, along with there unique shape is what i love. I have notcied it deffinatly makes me alot more accurate when playing. Now they do take a few days to get used to as at first they tend to get lost in your hands, especially if you have monster hands like mine! However saying that, now they fit perfectly.

The second thing that makes them differant from alot of picks is that they are quite thick, although there is many sizes availble now. I personally think the thickness does alot for my tone, it gives me that clarrity i need. I woudn't use them on acoustic as i do think they are too thick and i like the brushing sound on acoustic that is acheived from thinner picks.
Material? They are nylon, not alot of people prefer nylon, and i was one of them untill i got used to it. The sound is deffinatly differant from the Dunlop Tortex picks and so is the feel, obviously, but i really have grown to it. If you really don't wan't a nylon pick, the Jazz collection from Jim Dunlop is now very wide and they have a variety of materials, which will change to sound they make but they all have the same feel to them.

The price is about 50p a pick, which can add up especially if you loose them alot! Saying that, they arn't as expensive as alot of other picks in the same quality bracket and if you buy them in bulk on certain websites you can get a pretty big discount.
I can't really comment on how durable they are because i tend to loose my picks along time before they wear down, but so far i've had no problems. Having said that, my Tortex plectrums did show signs of wear after even just a few uses, and these don't do that from what iv'e seen.

So, The Dunlop Jazz III, definatly give it ago if your looking for that 'right' pick. I can almost guarantee that after you've got used to these picks they will make your picking more accurate. They really are unique and so i can't really compare them to much else on the market and your going to have to try them yourself, but for about a year now, they have been my go to plectrum of choice.