I don't need any more carbs, thanks, but there are plenty of bands that fit your bill. It's not that amazing a feat, really. Any of the following groups have at least five albums that are at least as good, if not better, than any STP:
1. Zeppelin (close your eyes and pick any 5 Zeppelin albums)
2. The Who (ditto)
3. Sabbath (any of the Ozzy or Dio albums, plus Born Again)
4. Van Halen (see Zeppelin)
5. They Might be Giants (basically anything they did pre-2000)
6. Smashing Pumpkins (say what you will about SP, but you can't deny BC is a songwriting genius)
7. Pink Floyd (see Zeppelin)
8. Chili Peppers
9. Deep Purple
10. Tool (they only have five studio albums, and I'd rank almost all of them above the entire STP catalog)
11. Faith No More (see Zeppelin)
12. Blue Oyster Cult (these guys have 15 studio albums, there are at least 5 masterpieces among them)
This is just from a 30-second glance in my own iTunes library. There are many, many, MANY more examples.
1. They lacked any pop sensibility but hard to argue with overall. It's personal taste but I'll take STP.
2. A powerful group but lacking in so many areas. Not consistent enough by any means.
3. This has to be a joke?! 1-dimensional, no sense of harmony, counterpoint or any musical subtlety whatsoever versus...STP. It's not the same ball park, it's not even the same game.
4. Love VH, Fair Warning especially but they never had any depth. Not comparable imo.
5. This I like. STP goes way beyond obvious "rock" comparisons, there's so much in there. If you'd thrown in Paul Simon or Joni Mitchell, we'd have a conversation.
6. Talent, yes. Variety and consistency, no.
7. Which Floyd? If you're talking Dark Side...etc that peaked and ended with Animals so that's 3 albums.
8. STFU. Seriously.
9. Seen them, loved them. But lack of depth and variety kills this one.
10. If you don't like pop music, you miss a lot of what makes STP special. Love Tool but Maynard does not do pop.
11. Nonsense.
12. Clearly personal on your part. I often do the same thing myself but you'd need to provide some context imo.
Imo (and it is just that), very few acts have produced 5 consecutive albums of increasing craft that demonstrate a wide range of influences, abilities and musical understanding. STP, for me, belongs in the same bracket as The Doors, Steely Dan, Paul Simon, Little Feat, The Band. That's the level. And No4 was a cool record. Not their best but you could imagine them doing Cole Porter on there, ain't gonna happen with any other modern group.