I've been really lucky - have yet to get a flat, but since I just transitioned to a road bike I'm expecting that to change. Based on recommendations on this forum I do the belt-and-suspenders thing and carry a couple of CO2 carts AND a pump.

I tried both the Road Morph and the Lezyne Pressure Drive hand pump (small), and found that even without the ability to use the Road Morph as a floor pump, I was able to get my tires to 100psi easier with the little Lezyne than with the Road Morph. I thought that the gauge on the Road Morph was going to seal the deal, but found the gauge a bit hard to read - much harder than the little brass dial gauge I carry in the seat bag. From the standpoint of ease and efficiency I'll use the CO2 carts first, and switch to the pump only if I waste or run out of the carts.