M_Boats: auto pilots

Trying to find out the whole story on auto pilots for tillers, I know several small auto pilots for tillers are history, but what happened to Simbad autopilot, did it get goggled up by Auto helm. Has anyone got the Auto-Helm 1000 to give there feed back on. In some European countries they advertise Navico tiller autopilot but not here, is it also history. Are there any Tiller-mates still working and available? they worked good for me.