I bought these picks as I wanted a silver plated plectrum but couldn't find any cheap ones. I discovered Dava by accident and decided to buy this mini 5 pack to test some of them. I was very interested in the Master Control, as this pick has a nickel/silver tip. I'll break my review down by pick:
Master Control (Rock Control Nickel Silver): UNBELIEVABLE. Great tone, feels very nice in the hand. Not slippery at all. The centerlines give an indication for the "feel" of the pick (ie. from soft to hard). Feels very sturdy. It's a shame Thomann doesn't sell them, because I can't get enough of them.
Jazz Grip Delrin/Grip Tip Delrin: Once again, fantastic grip. Not slippery, just as you want your pick to be. Feels very soft and nice to the touch. The combination of the grip and the tip offers some great widely employable techniques. All in all, very good!
Rock Control Delrin (red tip): Same grip as the Nickel Silver Tip pick, great feel, good tones once again, just as comfortable as the nickel/silver tip but a different tone as one would expect.
Dava Control Nylon (blue): These were my least favorite of the bunch. Good grip, the tone was there but not as good as the other ones (personal preference).
If you're curious about Dava and want to try out some of their picks, this is the way to go! This pack is great value for money and you can try out some different combinations for a rather nice price. All in all, I would recommend it!