I had a cube of my house ale. Starter was from washed yeast 1.2 litres for what ended up to be 3 days on the stir plate. I poured the wort through a strainer to catch the hops and trub. It splashed A LOT. I had a head of foam to the top of the fermenter. (2" or one gallon). I pitched the yeast with out o2 for the first time in a long time.
Last batch with a comparable starter, I gave it 5 minutes of o2 in the ball valve. I had yeast on top in 5 hours and full krausen in 12. It came right out the top of the keg that had 2.5 gallons of head space.
With out the o2, in 6 hours, I had foam on top. I don't know if it was from the pouring or the yeast and a 1" head on top by 14 hours. It was a little slower, but still a good start.
SO I guess what I am rambling is a stir plate seems to work as good as o2 or even better to get things going, and both together make for an even better start.
I learned a LOT here, Thanks