Cream:

Disraeli Gears:(1967)

Wheels On Fire:(1968)

I can't imagine a record collection without these two classics. In fact, I have two copies of Wheels On Fire. Up front I'll say, I like Clapton best when he's pushed, and surely Jack Bruce and Ginger Baker could do that. Dayglo and flare, Disraeli Gears picks up with all the psychedelia where Fresh Cream left off, but by Wheels On Fire, all things are striped down to drive and thrust. Side note, Wheels was the first double album to go platinum. I'm sure you know these albums, or can at least name the hit songs off them. I'll just listen and enjoy.