I use a Sony MPF920-L and it works well. I too got a deal on a dozen of these drives a while back. If I recall it supports up to 82 tracks.
The one catch with it is that if you're writing low density formats (eg. Amiga, Atari ST) to HD disks, you need to put a piece of tape over the HD hole of the disk while writing, otherwise it uses the wrong settings and your copy will be unreliable.
The only other catch I've found with HD disks is that if you need to write to these disks on the Amiga side, you might have problems. Not all DD drives can write HD disks. My internal A500 drive can, but my external one can't. Likely because my internal drive is a replacement from AmigaKit, so it's a modified HD drive to begin with.
The one catch with it is that if you're writing low density formats (eg. Amiga, Atari ST) to HD disks, you need to put a piece of tape over the HD hole of the disk while writing, otherwise it uses the wrong settings and your copy will be unreliable.
The only other catch I've found with HD disks is that if you need to write to these disks on the Amiga side, you might have problems. Not all DD drives can write HD disks. My internal A500 drive can, but my external one can't. Likely because my internal drive is a replacement from AmigaKit, so it's a modified HD drive to begin with.