Because of their astonishing articulation, I find that every BKP I've tried has sounded less compressed than other pickups but that's in no way a bad thing. I use a PRS SE Custom 24 and like you, I quite liked the HFS/VB pickups but ultimately had to change them for BKP. In total, I've tried five different bridge pickups and two different neck humbuckers from BKP and most have spent at least a short time in my PRS to see what they were like so I'll try to compare them all to your experience of the PRS pickups.
The stock pickups actually sounds pretty good, I just want to try something else. So far I love the focus and tightness of the HFS, it's definitely among the tightest bridge pickup I've played so far. The midrange is throaty, and very compressed, which gives good definition with drop tunings.
The Vintage bass is OK, it warms up the neck position of a 24 fretter quite well. But I wish it's a little more "liquid" for shred runs.
Emerald bridgeMuch more open sounding than the HFS with a tone that's frankly too bright for the PRS but it has a beautiful tone, is extremely articulate and feels like a hot PAF.
Cold Sweat bridgeAlthough still a bright pickup, it's nothing like as bright as the Emerald. It has a more modern cutting edge to it, is very tight but nothing like as compressed as the HFS and not as thick sounding.
Holydiver bridgeThis is what I settled with in the PRS and overall it's my favourite BKP bridge pickup. Compared to the HFS it's at least as thick sounding and has less flub in the bass. The HFS is good but I still found that there was an element of muddiness at the bottom end when using a lot of gain. You just don't get that with the Holydiver, which also has a sweeter lead tone than the HFS and a richer and smoother distortion with chords. Just as tight, a lot more articulate and much better tone. Extremely versatile with plenty thick mids to help it cut through the mix. Awesome pickup in every respect.
Alnico Nailbomb bridgeThe tightest and most aggressive sounding pickup I've ever tried. It has quite a thick tone and worked a little better in my PRS than in my Jackson but compared to the HFS it's brutal. Much tighter and much more aggressive. Very 90s Metal. Great if that's what you want but I didn't find it anything like as versatile as I'd hoped.
Miracle Man bridgeHas an awful lot in common with the Holydiver so as I've already compared that pickup to the HFS, I'll just say how this is different to the Holydiver. It shares the thick, smooth and articulate tone but has a more pronounced top and bottom end. It's a bit tighter than the Holydiver and has a bit more aggression to the tone with more screaming highs but it's also not as versatile as the Holydiver and the tone isn't as sweet.
Cold Sweat neckFantastic neck pickup for shredding with a highly articulate sound and nice and fluid. Not particularly compressed, retaining a PAF feel to it. Certainly less mud than the VB. I never thought I'd find a better neck pickup and it's still a close second.
Emerald neckA bright pickup but nothing like as bright as the bridge version. Has a number of things in common with the Cold Sweat in that it's very articulate, has no mud, is very fluid and great for shredding. The alnico IV magnet used in the Emerald however gives it a much sweeter lead tone than the Cold Sweat and greater versatility. I find it gives me everything the Cold Sweat neck did and then more besides. I was all set to get another Cold Sweat but went for the Emerald thanks to Tim and it hasn't let me down.
It's obviously up to you what you take from all this but for me, the best combination to replace the HFS/VB was a Holydiver in the bridge and Emerald in the neck and like you, I really liked the stock pickups. If you want a bit more aggression but less versatility, the Miracle Man/Cold Sweat combo will serve you well too.