Both pickups sound fantastic, really. Note definition in chords is superb and the timbral quality is very pleasant at high distortion, no shrieking. Instead you get a very pleasant and mix-cutting high-end.
The only reason I put 4 instead of 5 stars is because of the pairing of the two pickups.
The Pegasus alone is a fantastic pickup. The Sentient alone is a fantastic pickup. I think that the timbral difference is much too much for them to be a great pair together. They both have their own great sound but switching between them doesn't 'gel' as well as I'd like. The Sentient is much duller and warmer than the Pegasus, although it does sound phenomenal on the clean channel - there is SO MUCH BODY.
I'm still keeping them as they sound infinitely better than my stock pickups, but nevertheless, they sound vastly different when switching between them.
I'm extremely happy with the pickups, and you would be too if you are looking to expand your guitar's timbral pallet. If you are after a neck pickup that delivers incredibly massive clean sounds, and a bridge pickup that will melt your freakin' face off then you should really buy this set. It is really really good and I'm a happy happy guy.
- EMR