Best Bands of all time - in no particular order

I think this is a hard list to make. I can make my list of my favorites, and that is nothing more than personal opinion. I might say "Name of Band Here" sucks on my personal opinion list but again, that's just my feeling. I wouldn't say any band sucks because someone has to like them. No-one sucks, but I might not like a band. As Duke Ellington (apparently) once said: "There's two kinds of music: good and bad. I like both"

To make a list of the "best" bands, though, really is even more subjective. How can you determine that one band is better than another. For example, in the rock genre, my choice for best band would be Led Zeppelin. They could improvise, they wrote a plethora of songs and, as importantly, they showed they could play almost any style. They put on a great show, were musically innovative and experimental. On the other hand, they had a reputation for being incredibly sloppy from time to time. Compared with bands like, for example Yes or Pink Floyd, Zeppelin was downright messy in the way they played. But that was their style and they wouldn't have been the same otherwise.

But that's the point, isn't it? I just made a case for Pink Floyd or Yes being the "greatest" over Zeppelin. So, really, my point is there is no best. There is only each person's opinion of what is best - and everyone generally has a good logical "leg to stand on" when it comes to that opinion. No point in arguing about it.