I don’t personally own any 7-string guitars, but Schecter recently introduced a 7-string electric guitar with fanned frets – what they call multiscale – where the lower strings (low B, low E, etc) are longer than the high strings. This makes all of the frets look crooked or “fanned”.
Very cool – though I would never want a guitar with fanned frets… I can’t imagine it does wonders for muscle memory and navigating a fretboard quickly.
For many years I used the yellow and green Dunlop Tortex picks, and especially gravitated towards the slightly thinner yellow version.
Recently I tried the Graphtech TUSQ .68mm. It’s thin enough to bend just a little bit when you pick making fast passages easier and less fatiguing. It’s also substantial enough to not feel flimsy or make an overly percussive overtone like really thin picks do.
Overall highly recommended especially for fast alternate picking.