Interesting you mentioned White Deer Creek, I only say that because for such a beautiful stream it often gets overlooked. When I went to school out there I fished White Deer Creek every chance I got and I'd say 95% of the time I was the only person there. At Penns you will always see people but not of the same magnitude of Spring Creek, which gets absolutely hammered. That being said, if you're willing to walk a bit you can escape the crowds at either place. PM me if you're looking for a little more specific information.
Twice now, while out that way, I have meant to spend at least some time on White Deer, only to stay put on Fishing Creek (which I like better than Spring Crk.) One of these days I'm actually going to do it, hopefully this spring. I know little about it other than it is wilderness and the brief notes from talking to and reading Landis and a few other Tu members from up that way. Sure looks like a nice little wooded trout stream.