I'm not a huge connoisseur of pickups, but I immediately loved the sound coming from the Pegasus. I went from a DiMarzio ToneZone in my Ibanez RG520, which sounded muddy and hardly suitable for anything in the metal genre, to this Seymour Duncan which is touted as being custom made for prog metal.
It kicks, it punches, it's crisp and clear in the highest gain and in the clean channel. And it brought my tone out of the 90s and into modern prog metal. I paired it with a Seymour Duncan 59 in the neck position to balance a modern and classic sound.
Tip: check out Keith Merrow's Seymour Duncan pickup comparison vid on YouTube. That's what inspired me to buy this.