Pffffft.From what i understand you like, go for Physical Grafitti.
I mean if you find Page boring, chances are you're not going to be a huge zeppelin fan. But honestly, i can understand just not liking them because of the hype around them. They're great i think, but not as great as everyone hypes them to be. Tad overrated.
If you're looking for their influence on metal, and looking for one album that defines that, you're not going to. Every album has a medly of songs that are blues, hard rock, folk rock, etc.
Physical Graffiti is an example of that...because there are some big hard rock tracks on there, but some softer ones too. But sides 1 and 2 have some really good heavy rock tracks like the Rover, Trampled Underfoot, Kashmir, etc. Houses of the Holy would be good too for what you're looking for.
One more thing:
no blues pieces are creative, but they're all original at the same time.