I also use mostly HD disks since they are more easily available new. You only need to tape the whole if you are using them in an HD drive, to fool it into thinking it's a DD disk you've just inserted.
I did have quite a number of problems using HD instead of DD.....in a PC. Never on Amiga! Maybe the heads inside an Amiga drive are stronger than their PC equivalent, I don't know.
If you have a Commodore-era Amiga DD drive, you should be fine with HD disks. Later models had different drives and are known to have trouble now and again.
