As a rompler-groovebox 707 has a lot going for it to distinguish it from the pack - but it needs rompler-groovebox firmware TLC from Roland; sequencer features, navigation, workflow.
And they have a well established habit of shortsightedness - bespoke drivers, abandonment, etc.
The 101, though relatively expensive, I suspect might be the long term prized item. Very small, huge sound palette in its patches, versatile FX and enough tracks for on-the-go compact composition. Sounds great and makes a great elektron sequencer sound module.