The SIPs are out vegging everything by far. The 10g sip is out vegging a 15g hard pot, and that is including being topped. This stunted it for 6 or so days, and it has caught up and passed it now. 2l soda bottles made into sips are by far superior to starting a seed or clone in a solo cup or 1g. No comparison. Instead of being root bound quickly by a small container. The roots continue to grow and pile up in the res if you let it. Sip watering at this stage (seedling or rooted clone) takes some trial and error to keep the roots white and flourishing, you don't want to drown or dry them in the res if you can help it (but it happens and the plants still do better). Once in a bigger sip it is set and forget, water every two weeks or longer in my case. When I pull up the top plastic cover, all I see is white roots and worms on the very top of the soil. This does not happen in smart or plastic pots unless you keep a good cover on it.
I'll be converting everything I grow with to sips. I can't find a reason not to, it is easier with better results. Anyone remember the rhizosphere? Most don't utilize it correctly, I'm on my way. Keep it moist and covered on top, and you will come back to find roots exploding up top.
From my trials inside and out between "conventional" potted growing and my sips and hugelkulture, I honestly can't find one reason to keep growing like most, other than I have the materials already. That isnt a good enough reason for me, I liken it to, "Well I already have this bottled nutrient lineup, I may as well use it and not grow organically."
On another note, my small lettuce bed (6" tall) is still growing lettuce and peas through the winter with many sub 30* weeks in a row. Some of my summer leeks are now winter leeks, and I have a few 3' tall tomato plants growing well to be put out in a few months. It is amazing what the soil can handle when you have healthy and thriving life in it. Many days I go out to warm up the car, and my beds are steaming. That isnt happening in many other gardens here lately.