Overall, ith 6 rigs, I found that the best solution is MMPOS if you are not a noob.

the only real advantage of Hiveos is that you can copy the flyghtsheet from someone else.

But if you are in trouble ? its just a big mess.

MMPOS on the other hand, is small enough that you post your problem in Discord or telegram, and someone suggest  solution to fix it. Not to mention that they are quicker to update the mining software and when new coin come up, the setups suggested by the community lead to quickly reach  good performance level.

With Hiveos you are on your own.

in regards to windows, there are some limitation, like the memory reserved that lead to be impossible to mine eth+zil with 6 gb cards, to not be able to have ergo new work preloaded, and the Nvdia driver that doesn't perform as well as the linux one in power management.

the result, for me its that , I pay, and not a lot, just for 2 rigs out of 5,my rig are up and running without issue and I am not spending excess time managing those.