So, I went from this:
I replaced the stock Duncan STK-4 single-coils with a pair of G&L Legacy singlecoils (used Duncan white covers since the DiMarzio tall covers were too tall, although the Duncan covers were a bit too short) and swapped the TB-5 Custom for a Perpetual Burn.
The single-coils are a *huge* improvement over the Duncans. I knew I liked the Legacy pickups in my Legacy, and I definitely like them here. The Duncans were kind of dark and not particularly dynamic, while the Legacy pickups are clear and Stratty, just like you'd expect.
The Perpetual Burn is interesting. It's very uncompressed and unforgiving, and seems to be pretty balanced in terms of frequency response (no hyped highs, mids, or lows, but the lows do extend deeper than I'm used to). It was a little sterile sounding through my Mini Recto, but it *loved* the squashy Marshally sounds of the JVM-1 and Budda.
I'd describe it as a pleasant mildly hot PAF-type, with the caveat that if your amp will reproduce deeper low end (such as through a resonance control, or my Sunn's insanely deep response) you will get a lot more depth than you'd expect!