I'm 74, and had a long life playing bass. I've owned so many amps, I literally have forgotten some. Ampeg B-15's, BT-15C, SVT, SUNN Coliseum, Marshall Major, Marshall 3540, Seymour Duncan, GK's Traynor, Hartke, SWR, Carvin, Pearce B2P, and a nice Genz Benz Shuttle 9.0 that Andy serviced. Oh, yeah, I have that Peavey MAX 250, AND a Fender Rumble 200. I feel the opposite to be true. The Peavey is a better combo. The Peavey has more usable stand-alone watts, the Rumble has about 140 or so by itself. The thing that I do not care for, is the non-defeatable limiter on the Rumble. Although I have utilized it for some 'squeeze' on occasion. Don't get me wrong, I like the Rumble, but as far as it not coming close to the MAX 250, I feel they're both capable amps. The MAX also has an angled baffle, and that really helps. I have played the 200 on gigs where I was told to just bring that, and I'd be "In the house" Yeah, sure. Kick drowned me out in the foldbacks. Amp out of steam. 'Normal' cover band stage volume. Bass kazoo.
I've tried the 500, side by side with the 200. Fart machine. I bought the 200, a better, fuller sound at what I thought would be typical volumes. I also tried a new MAX 250 at Guitar Center at the same time. It was killer sounding. I much preferred it over the Fender and Ampeg combos on the floor. I didn't buy it, because the grille rattled badly. Apparently, Peavey fixed that. I may actually bring the Rumble and the MAX to my next gig there to compare.
I've had mixed feelings about combos over the years. If you are in a loud situation, you might be stuck with that amp, and that speaker- with no options. Usually I carry a good 500 watt or so head, a spare amp head and a good cabinet. I may resume that policy.