I've never tried the Sobe pink stuff, so take the following with a grain of salt...
Try diluting the mix of the two slightly, and add some EM (or Cotton Candy) and just a drop or two of Whipped Cream. WC really can round out the edges of a flavor.
I tried it with em 1 drop/ml but not diluting the flavor yet. 2 drops of WC in 1.5ml has helped.
I get that strawberry tickle aftertaste at the tastebuds near the back of my lower jaw. That's cool.
Diluting should bring the flavor out. Diluting and more % of banana should get er done.
Never tried Strawberry Banana Lizard Fuel? My summer favorite. Sobe Pina Colada's the next best thing.