I know the short answer most people will give.... NO!
But i have spent several hours mining void opals and several more mining painite and I am pretty sure that painite pays better.
How? Quite simply, if you go to a void opal hotspot you spend most of your time boosting about firing pulse waves, ignoring 99% of the rocks you see. I have seen the claims that void opals can pay up to 100M per hour, but I have never earned more than about 60M (still good money) and have earned as little as 30M per hour. Quite simpy, earning 100M per hour involves huge levels of luck in locating cores quickly.
However go to a painite hotspot and you will find it everywhere! As well as cores, painite exists as surface deposits, subsurface deposits and surface fragments that can be mined the old fashioned way. In a painite hotspot, all of these occurrences seem really common. For example the surface traces seem to be present in about a third of all rocks.
I have had three visits to a painite hotspot. I sold all the painite for around 797,000.
Trip 1: 177 tonnes in 90 minutes (four cores found) = 94M per hour
Trip 2: 78 tonnes in 60 minutes (zero cores found) = 62M per hour
Trip 3: 156 tonnes in 90 minutes (three cores found) = 82M per hour
I did this in a python with 2 mining lasers plus one each of the new tools, I had 6 active collectors.
My technique is to set everything except painite to the ignore list. I send a prospector off to investigate anything that looks remotely glowing. While it travels to the rock, I multitask and use my mining lasers to chip sample off as many rocks as possible (the ones that are not glowing and are not too uneven and spinny), usually taking off a single chunk as I fly past. If my collectors react, I know that there is painite in the rock, so I launch a prospector. At least 50% of my profit comes from this. Finding a core is a great bonus but not essential. I actually found a rock that had 50% painite surface fragments, 2 painite subsurface deposits and a painite core. It netted me 25 tonnes.
The gameplay is a lot more varied that hunting cores too. It involves quite a bit of multi tasking such as chipping off as many rocks as possible whilst you prospectors scuttle off to do their thing, or deploying a subsurface drill and mining surface fragments at the same time. The more you can multi task the more you can make.
Painite all the way for me