The Rebel Yell is stupid good in the right guitar. In an ideal instrument, it cannot be understated how awesome it is. It has a very even harmonic sheen, wide pick attack, excellent string separation, amazing clarity, and tight lows.
I have the Rebel Yell bridge in a Mahogany, bolt on neck short scale guitar, with a rosewood board and mahogany neck. TOM bridge. The personality of this instrument is somewhere between a tele and a Les Paul, but it is much more low mid focused than my Les Paul standard. The guitar was just a ball of mud disaster in several situations, and the Rebel Yell was not working in my Les Paul Standard, where it wasn't quite high enough output or phat enough for my needs in that guitar. The Les Paul, in contrast to the LG, has an acoustic tone that is resonant and balanced, very similar to an acoustic guitar.
When I put an A-Bomb in my Les Paul, I dropped the Rebel Yell bridge into my Godin LG on a lark, and I was absolutely stunned. My wife walks downstairs as I am testing the pickup and she exclaims "Man, that's PHAT!'
The Godin LG adds the low mid thickness and girth, while the Rebel Yell adds attack, articulation, clarity, and string separation. It is such a perfect fit for that guitar that it is just insane.
Make no mistake, the Rebel Yell bridge pickup sounds incredible in a Les Paul, and it worked perfectly with my Dual Rectifier. (Which I sold) But with my Mesa Boogie Electra Dyne, I just wanted more push to get the gain saturation I was going for. Furthermore, I wanted a more similar low end response since the Electra Dyne is an incredibly bass heavy amplifier, so I was tweaking my setup to work specifically with a magical, but incredibly fussy amplifier.
I actually like the A-Bomb LESS with a Dual Rectifier than I like the Rebel Yell. BUT, the A-Bomb shines through the Electra Dyne and through my Revv Generator 120. So, it all worked out.
But yeah, I have a Rebel Yell bridge and VHII neck in the Godin LG, and that guitar is really at its best with these pickups.