My barber uses these blades to dry shave sideburns off customers. Using it myself, I find these blades surprisingly sharp considering its relatively low cost. The only downsides are it's unforgiving and it tea stains at the end or even during its first use.
Razor GC.84 SB Blade Tatra Platinum 2nd
Shave with razor paired with the blade was very good! Very smooth and comfortable especially during the atg pass on the chin and lips area.
Gillette king c and Parker blade. This combo did not work very well for me though. Not the closest and not the most comfortable. Out of town and only have the gillette with me, luckily I have a few Nacets along with me for the next few days. The parkers seem to go better with a more aggressive razor, for me at least.