The only catch is that it's a minor lottery which model drive you're getting.
For instance, I got all white label WD80EMAZs (256MB cache, non-SMR, same firmware as the Reds) in this batch, so I had to insulate the 3.3V pins.
There are also true Reds, 128MB and 512MB cache drives, helium filleds, 7.2K HGSTs slowed to 5.4K, and other variants.