The Steelseries headsets are so insanely comfortable. In fact, in every video you see they’re praised for it. Which is a huge bonus for me, because I’ve had the VOID Pro and other brands, and they were just too big and heavy for my little girl head. and it was important for me to go wireless, so I understand your desire for it to (once you go wireless, you don’t go back). This fit the bill exactly. My friend actually recommended them to me, though he had recommended the Arctis 5s which are better (but not wireless, he has since upgraded to the Steelseries PRO). I’m very glad I settled on them.
As for charging, it seems like for the HS70, it sorta functions the same? I can’t really understand their description, but here is how mine functions. It goes red, beeps at me like an annoying house wife, and then I plug the headset in. I still get audio over the cord instantly, no need to turn it off and back on again. Except…that supposed “20ft” radius. If you reach that, the audio will start to cut out and eventually turn the headset off. Then you gotta get back in range of the adapter and return it back on. The only annoying thing about the headset, and is probably fixed in their more expensive wireless headsets. Now, if your headset is dead and already turned off, I do not think plugging the cord in will immediately begin sound through, but then again in all my time I have not actually tried that. I’m always needing them charged for wireless use, so when it hits yellow-ish I’m charging it. I could try it for you though.
As for the HS70, it sounds like when it dies and you plug it in, you gotta restart the power cycle to get it to start working through the cord. Though I honestly would be surprised if the HS70 did not have such a simple feature…
As for your link, there’s a lot there they haven’t even tested for the Arctis 1 (which is strange), but they look like they pretty much go hand-to-hand, except the HS70 certainly looks like it has a better build quality (at what I think is a cost to the comfort) and is better had not leaking audio through the headsets.
Is $100 your max budget? If you really like Corsair, they have the Virtuoso Wireless for I think $50 more. It’s going to be leagues ahead of the HS70 and the Arctis 1-5 range headsets, too.