I used to use thick picks (like Dunlop Tortex Jazz III). Now I am using 0.80 and 0.60. Things change.
The grip is very good, they slip well on the strings and have a smooth feeling between the fingers. I can only underline that they are great for fast passages. I used to use thick picks, but now I see that 0.60-0.80 are the best for me when it comes to licks and solos. However, as of today I stick to these or Grover Allman picks (0.80). Anyway, highly recommended!