The UAFX pedals definitely get it right!
I haven't tried their compressor or other effects pedals from them, I just know their amp models are a good margin above any profiler/modeler on the market.
They seem to be the only amp models that interact realistically with effects chains, and speaker behavior. You can even hear the speaker crumble whem going direct. Nothing else comes close!
I don't know if this is still the case, but one of the engineers designing models for them is a prof at either Cal Berkeley or Stanford who specializes in creating software like the stuff these models use.
Whoever he is, he sure does a bang-up job, because the stuff is extremely good.
I don't know if you've tried Luna, the DAW that's Apollo-specific, but for it they've modeled Neve and API summing amplifiers for the buses. I've used both in hardware, and have owned the Neve hardware summing bus. The models sound close enough that I bought them for the sole purpose of running stems created in Logic through these buses for non-classical tracks.
My son and I checked their Moog minimoog model against the hardware in an A/B comparison, same levels, same knob settings, the whole deal. As a Moog endorser for several years, he's very familiar with the hardware.
The UA model sounded
exactly the same, except at the very extreme settings of a couple of controls. We both expected the hardware to slay the software, but it didn't happen. Instead, we were very surprised.
Granted, designing software modeling a synthetic instrument, or hardware you hear only subtly in recording (
unlike the way you hear a guitar amplifier), is probably not as formidable a task. But still. They know what they're doing at UA.