I think all of the current NMB shows can be a bit hit-or-miss. But I won't complain because there are so many of them so you're bound to find at least find one you like every week. The magic episodes are definitely great ones to watch even without subs. I personally also like the ones where they talk about Wonders of the World, whether it be natural wonders or man-made ones. All the manabukun episodes are available on youtube. There should be a playlist for it.