Aging 15" speaker flatwound thump player here getting back into bass after many years... ...I want to include some slap in my "revival", but had assumed that meant roundwound. I'd been leaning toward GHS Pressure Wounds, but in a recent thread, it sounds like Dunlop Flatwounds and a few others have a more modern twist that might make actual flatwounds viable. Mostly I like the more old-school Motown thump, but I'd also like the ability to: Occasionally play some respectable slap. Not change strings more than every 6-9 months. I have a Boss GT-1B, with a good compressor patch, and plenty of EQ (on bass too), but I'm worried any flats would go dead, and ONLY thump after a short time. I only have one bass, a Sire P7 5-string, so I realize I'm dealing with compromise. Ideally, I'd have nickel rounds on a jazz, and La Bella Deep Talkin' on a precision. I like moderate tension, so TI Jazz Flats are out, though I love their sound.