If you have a "critical" Windows application running it on a Windows PC is always going to be the best option, if less than convenient.  The greedy issue you are seeing play out here is that Apple's M1 has beat the supported Microsoft options into the dirt performance-wise, so it is not only the convenience of having your Mac and Windows on one platform, but all indications are that the M1 Mac will run your Windows as fast or faster than any supported Windows platform in comparable form factors.  You just have the risk that at any point Microsoft or Apple could do something that Parallels cannot fix and then the fun is over.