oh, man! thx for the question. this is my first "ask an instructor" so i am very happy.
i used Dunlop u.s.a. TORTEX SHARP 1.5 mm look at the pic, i use the white one.
so, when i play, i hold my pick very very softly (when i play fast or sweeping). and i tray to reach the strings vertically.
when i started to play in this way, i found a cleaner sound n more pick attack.
so, if u think that it can help u, try it!
u will find a lot of possibilities.