My vote is go with the biggest stainless unit you can afford at that level.
Even if you go with a 0.5-1.0 m2 china unit, with the proper upgrades you’re probably looking at something north of 200k. And that’s not a route I would suggest for anyone who doesn’t have a very strong technical background that can understand what all of the bits and bobs on the shiny paperweight do.
Dual dual-stage 6" popes as suggested by Lilibel would likely be the best bet for most users. I can’t even imagine what that would cost to set up though.
Actually, I said the same thing as Lilibel, @cyclopath , but I was talking about 2 of the dual-stage, stainless CTS KDT/L-6 units. I think I may have mentioned that the 10s or 12s from CTS have the highest margins for them to sell, and the worst cost:benefit ratio for the buyers… since 12s are not actually double the speed of the 6s, for example.
The 2 dual stage Popes from Beaker & Wrench, properly outfitted with crude feed, product and residue pumps, connected in series and parallel where appropriate (as we discussed via email for the KDT/L-6s), and certainly high vacuum pumps, such as diffusion pumps for genuine MD operation may also very well be able to manage that level of production. Stock Popes just do not come with all the right “gear” (or even peristaltic)!
VTA (via root sciences) can do custom builds for whatever your heart desires, but their ‘off the shelf’ units are the VKL (1.4-1.1liter/h) VKS (3.75-3 liter/h) and VK100 (7-9 liter/h). You gotta do two passes of course so typically you’ll buy two and link them in series.
2.5L per hour feed (pretty sure I can do 3, still playing with getting my vac deeper)
I’m cutting just enough to get to ~95% TAC and leaving ~2% in the raffinate, roughly 18% waste, input material is 75-85% TAC. So, I think I’m getting all the cadabinoids Color is near-clear, some of the clearest D9 I’ve seen.