daytime /a/ used to be better, when we hold it as a safe ground before the highschools were out. When the nighttime /a/ rumors started to go around, then everyone thought that the other shift was better.
It's a myth you know. There are always good threads, it's just the amount of shit around them that varies.
Watching? Skip it, save yourself of some lost time
Reading? Do it, if you're into harem romantic comedies. Pretty cliche by now, Naru's punches get old quickly. Still, if you're going to get into Love Hina, better start with the superior option.