I definitely like the leaf worked into the 'h' in Entry #1.
I've updated our information to reflect the fact that you don't need to include the 'Inc.' and it's totally up to you whether you want to include the 'Development' or not.
On #17, our favorite of these at the moment, we were thinking we'd rather only see the 'th' after the 7 in the name, not under the roofline. Still with the leaf and everything, just only have one 'th' in the logo.
These are along the right lines; nice, clean, and simple, but with a little something extra that talks about our business. Thank you!