I have both the 29er and the coker, but I haven’t been on my 29 in a long time. Go with the coker, it is much more fun and I have no problem on light trails.
There are a few videos posted of 29er rides that I saved on my computer when I was deciding to get one. I do not know if any of the links are still active since it was over 3 years ago:
I might be able to repost the few videos that I saved (Joe Marshall’s commute and the urban 29 riding) if those do not work anymore.