I got the Robaux for monetary reasons and I'd say, hands down: Go for the Erica if HP and money is not the issure.
The Robaux rubberized buttons are just not very ... agile? you kinda have to press them hard - they're not trigger pads as e.g. on the ableton push. It works, but if you really want to jam live easily i'd def go for the Erica.
-- s_heidenreich

Cool, thanks for that....
Yeah, I'd rather wait, save & make the right choice...

Had actually wondered if the clicky buttons on Erica would be more "playable"...
Thanks for the input