Hey, wait a sec! I just took a look at the link in your post and that's exactly my pedal (or maybe a slightly newer, updated version).
Buy with confidence, Pal, this thing is a tank. It also comes with a second pedal that allows you to go through the many tracks using your foot. The second pedal is not necessary to operate the Looper and can serve many functions (I use it to navigate the tracks).
The recording quality is 24 bits, I think the latest Boss Looper is 32 bits, and probably it's the only tangible advantage over the Nux.