Fix a comma splice- semi-colon? Period? Conjunction?

[tchom_fox]

The comma splice in question: "You can read the whole book in an hour, you can ponder the ideas for days."
The two ideas are connected and contrast, so I feel that separating them by a period into two short sentences loses some of the connected feel.
None of the conjunctions that I've considered nicely capture the choose-your-own-adventure vibe aside from and/or.
So, should it be a semi-colon?
"You can read the whole book in an hour; you can ponder the ideas for days."

[Raluca_Mihaila]

I think this conveys your message: "You can read the whole book in an hour, but you will ponder the ideas for days."
I feel the need to connect the 2 ideas, and a a semi-colon seems insufficient.