Very well done -- simple, clean, yet it gets the job done.
I'm torn -- #37 is great (different), but I'm worried about how this logo will work in printed space. White on green (or white on black) is sharp, but will be used in a lot of white space.
#33 and #34 are my favorites right now. I ranked #33 higher because it incorporates both black and green and is balanced. #35 is also nice, especially with the green line that runs behind all the text.
I'm not sure what to recommend for changes -- I like these and I don't see a lot of obvious areas to change. If you have additional comments or thoughts, I'm willing to begin a conversation.
Thank you for your entries!