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From that list of 3 cards, I would definitely go Chase Sapphire Reserve or Venture X over the JetBlue (B6) card.
If you were a heavy B6 flyer with checked bags often then maybe it would be worthwhile but otherwise, flexible points currencies are king.
Both the CSR & Venture X cards have their strengths and not quite weaknesses but rather not standouts.
Would you be using lounge access a lot to justify the higher AFs?
If not the CSP may be a better fit and then get some Ink cards to boost your points balance.