I have seen a LOT of whitetail in units 6 and 10. I think general season deer is about shut down, but I know whitetail season runs a bit longer (just FYI "Regular deer" and "Whitetail deer" are different tags. Season dates are different; you can shoot a mule or WT on a general deer tag and shoot a WT only on a WT tag. You can't buy a "general deer" tag and hunt on it during the "WT deer" tag dates).
I shot my deer in Unit 8, but have spent a lot of time in 6 and 10. Between the two, I'd recommend 6 for WT.