I have several of these actuators.  The toggle switch appears bad and will only operate on direction (using on2).  The toggle switches are almost the cost of a new unit.

If I replace these units, what options do I have.  Are there other actuators that will work with my system, that may be cheaper or better?

I saw a video showing a manual override with another actuator that works by backing off the lock screw on top of the handle and then pusing down which disengages from the gear/motor.  Mine doesnt seem to do this and it would be handy.