I have to say this I got tracking on these items .
I will post soon in my thread.
As to how to solo mine.
"you lose and never hit a block"
if you can accept this above any thing with 1 th or more and low power is
okay.
Now frankly I can list ten ways to mine solo at fairly low cost. To medium cost.
I can build a 1 board t21 does 19 watts a th and down clocked with the epic controller it is quiet .
But it burns 665 watts. here is a screenshot of my 1 board t21 miner doing solo
this unit below has way more hash but is less efficient and it is not super cheap.
I can make these for about 700 bucks. you get way more hash rate and they are quiet.
but they are big and they burn .667x24=16.008 plus the fans power so 19kwatts a day so 365x19=6,935 lets say 7,000 kwatts a year.
for me my 20 cent summer and 28 cent winter power comes to 25 cents a kwatt so 0.25x7000= 1,750 usd a day
while giving me about 0.197 percent a year shot or 1 block every 500 years on average. So spending 700 to build it and 1750 to run it is
2450 first year and 1750 each year after for a 1 in 500 year shot.

or get the Thor hammer model for 250. it burns 0.038x24x365=332.88 kwatts at 25 cents or 83 bucks
so 250+83 first year and 83 every year after.
3.6th means 1 block every 5000 years
either way you are not hitting a block
500 years or 5000 years are too long
So having the 3.6th model you lose way less money in your lifetime trying to hit a block.
So the argument for 3.6th vs 36th is pretty simple. depends on power cost and how much you want to lose for an unlikely shot at a block.