I recently purchased an Paramount ME-II from OPT and can say I am extremely happy with it - the entire package of hardware and software work seamlessly together and with Sequence Generator Pro that I use for my automated imaging. The TPoint software allowed me to quickly polar align the mount after modeling the telescope (I cannot see Polaris from my location due to tall trees) - pointing accuracy is a dead on 10 arcseconds. Long unguided exposures are possible with this mount. OPT went above and beyond to help me get this mount and made sure I was happy with the purchase. Highly recommend ME-II - probably won't need to every purchase another mount ! Note the ME-II is BIG and HEAVY, my installation is on a pier, I had help moving it and installing it, but of course a mount with a 230 lb capacity would need to be beefy !
So far (two weeks), it seems to be a fantastic machine. All-sky pointing RMS was 2 arcsecs. No need for PEC. Tracking is superb with little or no star trailing or drift. No need for homing. Scope can be parked or simply left wherever you wish to leave it. When restarted, scope knows exactly where it is.