Do report back...
I'm looking seriously at getting into the looping/solobass stuff and the ditto 4X is on my short list along with the infinity, the boomerang, and maybe one of the boss pedals. I'm looking at adding a beat buddy as well so I do want something with midi capabilities. As I understand it, those without the quantize feature can be forced into that with an external midi device (like the beat buddy).
I will post back but it may be by the third week or April!