This is fantastic news to hear, Todd! Very much looking forward to the results of all your testing.
As for my own experimentation, I'm going the more blunt route, I guess you could say. Lab equipment, chemistry, scientific notation... it's all a bit incomprehensible to this English major. Gravity and pH are about as scientific as I get. But I think I'm probably more representative of the typical grower with dreams of being able to reliably reproduce a nicely-balanced cider with local apples. I'm looking for the right apples paired with the right method to make something quaffable to most of the drinkers who try a sip, and the ability to do it again next year (accounting as always for the vagaries of annual agricultural impacts, of course.) Anyway...
To that end, I've scaled my batches down to 1 gallon each. This translates to 1/2 bushel of apples per variety, which leads me to the point I thought I'd add to the discussion with this post: juice yield.
It's been incredible to me that this particular bit of information is so elusive in the literature. So much so that there is confusion among the amateur home-cider makers I sometimes share notes with online. Estimates I've seen for the amount of juice one can expect per bushel of pressed apples range from a gallon to four! (Even though almost all apples produce between 2-3 gallons.)
I have yet to find a text that gives details about pressing experiences folks have had over the years with all the multitude of varieties. Which isn't to say it doesn't exist, just that I haven't yet come across it. And I should note that I understand it could be because the quality, age, length of sweating, etc. can effect the amount of juice that results from any particular batch of apples. Still, the ease of pressing and the amount of juice produced by each variety of apple strikes me as an important factor to account for to any budding orchardist/cider maker. Hence, this is a detail I'm keeping careful track of. It's certainly something I want to know before I invest all the time and effort into picking the best varieties to grow. After all, who wants to make cider from a juice that on pressing day makes an aggravating mushy mess with sub-par yield, even if it will eventually become a drinkable libation? No thanks!
P.S. Glad to see Steve's note about Golden Russet. I have a few trees of my own planted in the last 2-4 years, but I haven't yet been able to try turning this apple into cider. Just can't get my hands on any around my parts. Still, from what I've read elsewhere, and now your added note of approval, I have high hopes for a favorable tasting experience.
Craig Bickle
Hap Woods
Zone 6a
East-Central Ohio