Lemme see if I can shift gears and tie this together. What 3Leaf stuff do you own (or previously owned), and what would be your alternate/replacement of choice if you were in a pinch, building a second board, or needed to replace those pedals? I'll give it a go from what I have/remember...
Doom/Doom 2 (have): Probably a colorsound clone or the SA multiwave/ultrawave. I use this for less for traditional synthy sounds right now, and lean into the clarity, blend, and texture. It cuts really well and doesn't get muddy the way I'm using it on my board. I probably have more flexibility in replacements because of this.
Proton 4 (have)/Chromatron: Microtron III or IV, SA C4 or Spectrum (respectively). Microtron quacks harder than the Proton/Chroma, but it's still very capable of pretty clean/precise filter vibes. You can push it into dirtier traditional mutron territory, but it's surprisingly flexible for a 3-knob 2-switch pedal.
Octabvre Mini (have): Octamizer or OC-5 (Don't like/use the kill-dry function on the MKiii.) OC will get you closer to the Octabvre vibe for obvious reasons, but the Octamizer is the most unique sounding analog octave on the market - and it rips in a mix.
Groove Reg and Wonderlove: I was able to get remarkably close to both with my C4 after a bit of tweaking. I made a C4 patch that is a dead ringer of my favorite GR2 sound/feel, and that was enough for me to flip the latter a year or two back. GRs are more bubbly/syrupy and the Wonderlove pushed into more controlled/clean territory. YMMV here.
Enabler: There are a lot of great, clean DI's with good 3+ band EQs out there. I feel like this filled a void when it was originally released, but the DI options have grown immensely. I only roll with a DI on my small board in case the backline sucks, lacks DI, etc. And that prioritizes simplicity and compactness. So I don't really have specific replacement needs and don't own an enabler any more.
PWNZOR: Don't have one any more. I replaced it with a Cali76 CB, and I liked the Cali, FEA, and Ovni comps I had as much/more. I don't think I own a comp right now, as I'm not using one on my board. I think the PWNZOR sounds great, but it was/is replaceable. His filters and fuzz are definitely more unique beasts.
LBB: Haven't had one in forever, but I would probably grab a DG Harmonic Booster if I needed something similar now. The LBB is more simple, surgical with the two fixed EQ points and a single switch, but I think I can get the same things out of the Harmonic Booster that I used the LBB for - new string zing, and a slap-friendly scoop.
