So far UG wins.
All I do with cimitron so far is view the toolpath, read the offset amounts, etc... (basically not much, lol). But a negative it has is the windows need closed by non standard windows icons in non standard areas on the dialogue boxes. The icon to exit a box would not be in the upper right corner and be an X, but mid way up from center, and not all the way at the right either, just the last icon in a line of icons. The icon is maybe a curtain closing, it's too friggen small to see all the detail. The pop up descriptions are not as fast and robust as UG's are. The worst part is the location changes box to box.
The escape button isn't being utilized. And the mouse buttons are not being utilized for viewing.
cimitron 0 UG 3