Although I usually use an Autocom, a recent tour to, and around, the Pyrenees and back saw me using a cheap Chinese BT headset.
Like the Autocom this required consideration, testing and adjustment for best set-up. The results were impressive and almost as good as the Autocom. The latter has automatic volume ramping which compensates for increased background noise as the speed increases which gives it a distinct advantage.
My touring buddy had a Shoei and his ability, with the same model headset, to hear me wasn't quite as good as mine to hear him. Whether this was the helmet, difference in bikes, or less attention to set-up I'm not sure. Quite possibly a combination.
The alignment, and proximity, of the speakers to your ear canals, if done correctly, will have a significant effect on overcoming background noise. I use home made foam spacers to raise the speakers towards my ears so they are just 'kissing' them. Dense foam, self adhesive Velcro and a strong pair of scissors is all that's required. You might also want a sharp blade to adjust the thickness of the spacers for fine tuning. The Velcro will attach to that already installed in your helmet for the existing speaker installation.
Done correctly I can (with the Autocom), as stated above, hear well upto 80mph+. Faster than that and wind noise does start to dominate. Having said that I can still hear, and make out, bike-to-bike, GPS and music at over 100 (autobahn) though not that clearly. This is with MaxLite ear-plugs in.
I was disappointed in my first Autocom install, nothing audible above 70mph, but thought that was as good as it got. Someone, quite possibly on here, suggested fiddling with the position of the speakers. It made a massive difference. It's not going to make everything crystal clear at silly speeds but it will make the kit far more usable at around the legal limit and reasonably above.
Best results would be from decent in ear monitors. A mate of mine uses fancy Shure ear-buds along with Comply tips. However, I can't be bothered with the faffing about with putting them in and the having the wires getting in the way every time I don my lid.