I was born without fingers, just a partial thumb with no joint.
I normally use plain dunlop thumb plecs but i got my tech to cut a regular one and glue it to a filed down metal pick but its not quite right yet, its really scratchy and scrapy sounding.
I'd say my fave is a marshall, heavy mid and bass, medium treble and i always beef it up with either a chorus, tremolo or phaser, you hear them tremolo effect in my second link but it recorded kinda fuzzy.
I kinda like duel rectifiers too, good and chuggy but they can be harsh.