Have a look at iLok site and their FAQ and make some conclusions like:
a) how they start charging for this and that - licenses between accounts, ZDT etc.
They are a business of their own - if they get away with a new charge policy that is what you get.
Having plenty money on iLok licenses - who has the Aces?
b) vendor go in and fiddle with your licenses
Steinberg Syncrosoft at least, keep those things separately. You work with your license codes yourself, Steinberg does not mess with your account.
Demoing iLok stuff - vendor goes into your account adding license for that - at least what Avid is doing.
c) updating iLok software - and suddenly you account lost licenses. Well, they have a FAQ how to recover - but still - really makes me wonder.
d) new subscription policies also create new habits for you - be online with your daw from time to time - or your software may stop working. Thinking the new rental models of Avid to mention one - within four days after monthly expire you need to resync licenses.
So far stayed away from anything iLok....it probably works, but don't fancy the policies built into it and how you become a customer to a company that you never bought a product from, in the normal sense. Just a consequence from buying a iLok based product.
But Softube anything, is probably really good after what I read everywhere - good stuff.
Ask Softube how their products are generally bundled with PC versions or not.