Best Tube emulation vst? opinion about its use?

[plexuss]

klanghabitat cassiopeia nice on busses and mastering https://www.klanghabitat.com/product/cassiopeia-plugin/

pretty much any Acustica Acqua based tube preamps usually as part of specific Acqua products and also their Black preamp emulation https://www.acustica-audio.com/store/marketplace here is a public estimation of the hardware each product is based on https://justpaste.it/AcusticaAudioAcquaMasterList

the Waves Abbey Road products are pretty good for tube vibe, run them at 96k if you can

kush. of course.

I dont mind karog true iron (@96k) from time to time https://kazrog.com/products/true-iron.. but that's transformers, and now I am off topic...

[sobrinN]

For me the best tube emulation is Radiator by SoundToys! Really a secret weapon.