In ethervane, after I type a few chars, the one I want usually ends up at the top and an "enter" will paste it it. If more than one result remains after filtering, and the one you want isn't at the top, a double-click on the desired one will paste it in. CHS seems to paste with a single-click -- even better. Either way, the popup is dismissed after the paste.
I really like the filter row concept. The other two apps I mentioned just haven't been as solid as CHS for me (after a while DB gets corrupted, ...)
Thanks for considering this.