I - perhaps stupidly, in retrospect - bought myself a Positive Grid Spark 40, because they claimed it could handle electric and acoustic guitar and bass. The bass options turn out to be very limited and, although it's not dreadful, my overall feeling about it is "meh".
Gregor and Frank's review has given me GAS for this NU-X jobbie, I've got to say. Very tempted. Mind you, it's £216 on Thomann (and therefore above the £135 post-Brexit bureaucracy ceiling) and they don't expect to have it in stock for 15 - 19 weeks. I might have to try the Mighty Plug in the meantime.
EDIT:
Just been outbid on a Mighty Plug on eBay. Damn! 😕