Interesting. I notice many on here have the 200W or higher. I recognize why. I'm using a Rumble100 which has served me well even playing a club, and the direct out is really good, can go straight to a PA through a board, while still getting output from your Rumble on stage.
In my case, being blind, I try to own gear I can carry. My bass and pedals go into the backpack gig bag, strap that on, pick up the amp in one hand and wave the white stick with the other. That makes this Fender Rumble really appealing. I can DI to anything I want, but even its 12" speaker makes more than enough noise for what I usually need. I totally get people saying not pushing it all the time, and I try and watch that. You can usually hear that in clipping.
You know what's different about these? They don't have the two inputs you used to see on bass amps; one mic level and one line level. We keys players used to push a rack of synthesizers into the line level input on a decent bass amp / set of cabs and for a lot of things, it would be as good as any keyboard amp. These days I'm primarily bass, so it doesn't matter. Especially with these newer effects loops in the back for putting pedals through. And I'm still thrilled about that John Lord-esque grunty grit.
And I'm still surprised the low B is nice and clean through it. I know the new 12" speakers are different now, but even at my last audition they were surprised when I was playing first and second position and crossing over to that low B, and it was strong and deep coming from a 12".
Not saying I wouldn't upgrade to a bigger one, but for me at least, the 100 is really a great size.
My only complaint, and it's a relatively minor one: I wish they had the newer tilt-back mechanism some amps have. I know I can get the amp wedge, probably will. I've played on some stages where too much of that sound's going into the floor unless it's put up on a chair or something.
Not sure I got a number either, but I am getting a lot out of this thread.