Im aware of S17 issue... but what if using immersion cooling method for it, would they function OK?
What about T17? Do they have same issues?

So my business is almost dead and I have some capital unused, deciding to get into mining (I did some low scale GPU rig mining before)

I have a limited capital, around 8K. Electricity cost is 0.07$ here.

I can not make a final decision whether better of starting with two "used" S17, T17, or similar hashrate asics, overclock them and mine bitcoin
or
Get one new Goldshell CK5 and mine Nervos , this one with import taxes will end up 9000k

thanks for the advice!