I'm not a looper myself yet--partly because of the inferiority of the looper on my otherwise beloved VE-8--but I've bookmarked units recommended highly by others.
https://www.sweetwater.com/store/det...recorder-pedal
https://www.sweetwater.com/store/detail/DittoX2
https://www.sweetwater.com/store/detail/720Looper
I'd say the Ditto in particular got lots of raves, here and elsewhere.