Swampy' results are pretty hard to argue with. It's something I've been saying for a while now: bigger pots, bigger yields. That's not the only benefit, though. In my experience, plants that have access to more nutrition and aren't as heavily rootbound tend to be healthier overall and have fewer issues with water, pests, and pathogens. Plus, I get much larger pods, on average, from plants grown out in larger pots:
As you pointed out, though, smaller pots means more plants, which means more varieties. And space management is an issue for any grower, no matter what scale you're growing on. So where's the sweet spot?
This is what's working for me. If it's a plant that I intend to sell, I grow it out in either a six or eight inch pot until it's at least got flowers, if not pods. The plants I intend to keep go in five gallon pots. If it's a variety that I'm especially stoked about or that I know I'm going to use a lot (different Morugas, Reapers, rare baccatums, wilds, etc.) it goes in at least a fifteen gallon pot, if not a 20 or a 25. I tend not to go larger than that anymore because I find it to be a case of diminishing returns; essentially, the plant begins to occupy more real estate than it's worth compared to something in a slightly smaller pot.
