For me, the frosted lens is a plus!
In a general-purpose flashlight, such as the ZebraLight SC600 Mk. III Plus, I have a strong preference for broad hot spots and bright spills. A frosted lens helps enhance both of those.
I think the ZebraLight SC600 Mk. III HI is a good companion for the Plus.
Something like the Astrolux S2 or Astrolux S3 might be an even better fit with the Plus. Those two Astrolux models are the re-branded versions, respectively, of the earlier BLF Kronos X6 and BLF Kronos X5. If size is a concern, the X5 is not much bigger than the SC600 HI. It out-throws it, however, by a considerable amount. If you are carrying your flashlight in a coat pocket or pack, the X6 may be the better choice. It exceeds 50,000 candela, and gives you the long runtimes of 18650. The X5 uses the smaller 14500 battery.
For those who purchased one of the regular SC600 Mk. III flashlights earlier this year, and those who bought the SC63, the decision whether to buy the Plus is a close one. The step up to high CRI is a very real improvement. The beam pattern, however, of the Plus, is probably very similar to ZebraLight's earlier releases. Depending how much you value high CRI, the hundred-dollar price tag may be more than you care to spend.
If I already owned an SC600 or SC63, I would probably wait to see just how good the Plus turns out to be. If the reviewers confirmed what the specs are promising, I would then sell my existing SC600 or SC63, and take the plunge on the Plus.