Good thread!
I converted to flats a couple years ago, and though I play in smaller and less guitar-dense units generally, I am with it about the
ownership of the lower bandwidth in an ensemble. With flats, I have a whole 'sonic room' to myself (oh yeah- and the drummer!) in which I can establish a figure, vibe, approach for the song in, and no 'sonic blur' with guitar or keys.
Flats are my weapon of choice on all 4 of my basses, including the Squier Classic Vibe 50's P-Bass I'll be picking up this week- that'll be getting a set of Chromes put on it. After I remove those roundwounds that I know are on it!
I tried the Fender Stainless Flats, but they were real high tension. A guy I know says they have "Neck Snapping Tension"! The Chromes are a good bit friendlier, they feel quite nice.