Acer aspire one kav60. Running the lxqt spin at present. a little slow but nice. Presently for me in lxqt in sid and sparky the openbox section has lost it's keybindings and also nitrogen went with a dist-upgrade, reinstalled.
As above, for slower equipment, you really can't go wrong with openbox. Note, you might want to wait a day of two. For me on a different machine on "sid-unstable" my most recent dist-upgrade in wanted me to remove obconf and obconf-qt (openbox configuration programs) and also add some updated libraries. I am waiting a couple of days.
If you are wanting to be on track for wayland in the future, xfce might be the route to go - their window manger is to be fully compliant for weston and wayland changes. Their recommends and my preferences do clash.