Whichever one you want! I personally always post in the Bryce gallery, just cause I like everyone there, ya know? I enjoy the community. As far as which gallery it should go into, I think usually it's the intent of the image. if you're trying to combine Bryce with a digital photo, it's not a mixed medium because the focus isn't really on the photo, it's on putting the Bryce work into the photo. However, I do also think that if you have combined photos with your Bryce, you should mention that you did that, so people don't get mad at you thinking you're trying to pull off a photo as Bryce, but hey, whatever you want! As the wise old man used to say, "It's a whole year later than it was a year ago! "