I can't speak much to 346, haven't ever hunted it. All of the Yakima region units are struggling a bit the last few years. 448 is definitely not worth your time. There are elk in there, but very few, scattered, and move a lot. I spend a lot of time in 448 and have never seen one. I have come across sign here and there, but always old. Your best bet is probably 346 and hope for snow, but not too much.