Funny to see you consider Fender Rumble amps as the best amps in the whole universe.
I mean, I'm glad for you if it ticks all your boxes. But the way you talk about it is a little too assertive and authoritarian, like if there was a universally best product, like if there was a truth and you knew it.
I'm here to say that Fender Rumble amps may offer a great bang for the buck, but they're not for everyone. When I've had to use them in rehearsal studios, I've never been able to get them to sound right. And believe me, I've tried. They always sound muddy, whatever I do. What's the point bying an amp that offers a great "bang for the buck" if one doesn't like its tone?
Again, happy for you if you like them, and OP may like them too, but I would recommend to try them before buying.