Get a puncture-resistant tire, is your best bet?

I have two bikes that are my daily riders, and since I have put Continental Ride Tour/Tour Ride on both, I didn't have a flat in 1 and a half years on either bike.

I have read good reviews about a comparable Schwalbe Marathon Plus, which I will try it out next, on the narrow clearance bikes I am planning to buy, since Ride Tours don't come in 25mm size.

Used Conti's GatorFlats and Ultra Flats on my bikes, and not impressed with them. Consequently, I've emailed to Conti to change their names.