One thing I like about the randomized floors in these games is that it makes grinding feel less like grinding. I'm still technically exploring areas I hadn't explored before, and collecting items. Plus, since I'm collecting Personas, there's more to it than just getting my stats higher. Plus, since the gap between how difficult the regular enemies are and how difficult the bosses are isn't huge (which is something other RPGs should take note of), I still have to focus and be aware of what I'm doing. It's more than just running in circles fighting the same easy enemies. I like that in 3 the floors are smaller and more densely packed than in 4, so the pacing feels quicker. Tartarus is the best.