One thing about Jet Opaque II is that it is very durable. On opaques there are issues, mostly "hand" and cracking. I'm very anxious to hear about any wash testing results with the Paropy premium black others may have have performed.
Unless the Paropy can withstand 25 washes without cracking I would not use it, even if it has nice hand.
I have found one way to help alleviate the heavy feel of Jet Opaque II is to use a heavy weight cotton shirt where you don't really feel uncomfortable wearing it. Thinner t-shirts it's more obvious.
I have yet to try any opaque that is lighter hand that won't crack, but I remain optimistic that someone eventually solves this.