The other central issue is high quality software. I'm sure one can do unguided imaging with many high end mounts to a certain point. However, if you want to do it without getting some extra grey hair and spending time imaging rather than tuning your equipment, then the software is the key. So I would recommend anybody buying a mount for unguided imaging to compare the software of different manufacturers …the difference is huge.
And best of all is NO software dependency and still unguided imaging
I am all for direct drive technology and think that it is the future, but someone has to bite the bullit and move the motor control algorithms into the mount firmware. With today's high end micro controllers the performance is not an issue and the reliability of things in firmware compared to things in the PC environment is lightyears better. I am quite certain that ASA's mounts will function more or less flawlessly with their 100 percent PC dependency, but the scary part is USB communication and the not so real-time performance of Windows. Besides, I think an investment in a truly high-end PC is very important - the stuff will be as reliable as your PC.
Now, one can argue that you are software dependant anyway when it comes to imaging. But, and this is a big BUT, when you have your stuff on a remote site, or are asleep inside, and the scope won't park so that the roof can be closed when the rain comes, something unspeakable is going to hit the rotating air mover big time.
This, of course, is a highly personal comment as it involves many feelings and hunches, but I do believe it has some merit.
My ideal mount would be a direct drive technology one with total firmware control, no need for motor traing (should be done at the factory), no external PC or software dependency and electromagnetic axis locks that engage with loss of power.
The last part should be on anyone's short-list. Suppose you start a slew at 20°/s, the mount accelerates and *POOF* - power-out. Your equipment will hit the pier with a speed of just under 1 km/h. Unlikely, yes, but we regularly protect ourselves from many even more unlikely things.
Now that qualfies as genuine two-cent advice