I use "Zookies" thumbpicks and fingers for finger style.Usually Fender or Alien flatpicks, although I have been using the DAVA Control picks by Dave Story lately and have really taken a shine to them. The heel and the tip are fairly rigid, with the middle of the pick is thin. By moving where you hold the pick, you can literally change from hard to medium to soft. The grip area is ridged so a heavy sweater like meself has no problem holding on.
All the best,
Mick