I planted the nasturtiums this year as a barrier to the SVB. I don't know if worked as I think all of my squash plants ended up with borers. BUT they do compensate by flowering for me. In Colorado I think I grew these once and they never bloomed (much like the morning glory and the moon flower). It probably had something to do with MiracleGro.
The variety I got was the Alaskan Variegated (I think) from Gardens before they closed.
The most prolific color is the Orange color:
But my favorite is a toss up between the Cream and the Red (in picture form, I prefer the red, but I think in real life I like the cream better):