We still use a blixer 4vv robotcoupe for light loads occasionally. It's really completely awesome and gives you a lot of control. That being said if hummus is all you will use it for I'd stick with a larger and cheaper R-series. You forgo the fancy cover but it barely matters with the speed the things get to anyway. For us we use it for a million things -- Really great. Prices go a little overboard as you go up in size though. the 4vv does a load of about 1.5KG of hummus at once. Seems I didn't have the right calculation before. But 1.5KG without shuffling things around. So I'm guessing the R8 could do close to double that.
I looked into an R30 btw. 4 months delivery (HAAA) and about $15K. No thanks. That could be more of a China problem though.