I have a set of each in my pocket at all times!
I first tried out the 208 as my pick for gypsy style playing. They really work well for me on my ukeleles. I got curious and tried out the 205's since I like Jazz III XL picks. These things are cheap, so I went ahead and ordered all of them. My favorite pick right now is the 206. I use all of these picks to change around my sound depending on the guitar, strings, effects. I tried the 5mm Primetones and they are too thick and "clacky" when I tremolo pick. I will have to try out the 3mm Primetones because I love the shapes of these Jazztone picks. I like the thickness of these picks, but I'd also like to try out the 3mm, since I also like the 3mm Stubby's
ProsThick. Slides and pushes the strings out of the way. It does the work. Nice texture out of the box. Very strong.
ConsThick. If you don't like 2mm thick picks, don't buy these. After a while they become slick. I suppose one could rough them up.