Pic of my current Rumble family. Of these latest 3, the R60 (v1) was my first. Then the R500. Most recently I added the R40.
I thought the R40 might replace the R60 (mostly because of its lighter weight and super easy portability), but I've found that I really, really like the tone of the R60 at practice volumes in my music room with all of the basses I play. So the R40 has become a travel-only amp, for jamming with friends away from home.
The R500 is a beast; way overkill for my current needs. But whenever I do back-to-back comparisons of new amps in a store, the R500 has always been my favorite when paired with the basses I own and play. As has been stated many times by @G-Dog and others, turn those dials to find "the" tone (and maybe get the amp off of the floor with a stand). Definitely nice to practice with.
View attachment 7370282