Last week I took a pair of Rickenbacker basses (Std 4003 and 4001v63) per request, to a recording gig... One with flats (Pyramids are my first choice, though TIs, also being nickel, would be my 2nd choice), one with RWs (in this case, D'Addario 45-100). The engineer asked for the RWs first... Didn't like the sound... Blamed that on the Bartolini active p'ups (in 4001v63)... Swapped RWs to std 4003... STILL didn't like the RWs... Re-strung as before, Pyramids on otherwise stock 4003 won the day! Another gig, both flats and RWs requested... I'm beginning to feel like a pin cushion!! Hahaha! Pyramid flats on a US P bass, and RWs on the aforementioned 4001v63... Couldn't swap strings from bass to bass due to different headstock configuration and scale length... However, flats on P still won the day! Took 2 perfectly set-up US Fender Ps to a gig last night to demonstrate to my gui**** why flats are my preference. It's a hard rock improv band, and live show... Started with RWs (new GHS L7200 Pressure wounds), as the gui**** requested. Big grin from gui****! Switched to Pyramid flats half an hour later... After initial confused look, another big grin from gui****, followed by the comment: "Ok, you win!" Flats won the day AGAIN! Most of the follow-up comments re flats vs RWs were essentially that flats sounded "cleaner," "clearer," "stronger," "thicker," and... well, you get the idea. There are a few times where RWs still beat flats, or so I'm told... Though, honestly, having given it the old college try, I can't find 'em!