Good call on the ground-wounds H/D.
There's GHS Brite Flats, Dean Markley Ground-Round Wounds,
D'Addario ½-Rounds, and Ken Smith Slick-Rounds.
Along those lines...there are "compression" wound strings.
They start out as full-up roundwounds, but are "squished"
into an oval shape in the winding process. Some of these
are Ken Smith Compressors, Rotosound Solo Bass 55's, and
Alembic CX-3's. The Ken Smith's have a great feel.
Finally

...flatwounds! Medium tension and bright (for flats) -
GHS Precision Flatwound and Dean Markley -- crosswound
underwraps and a stainless outerwrap. T/I Jazz Flats --
round core, Nickel outer wrap, LOW tension. Rotosound RS77
Jazz and Steve Harris sig set -- "Monel" wrap: `67% nickel,
28% copper, and 5% other metals` (thanx Flatwound

).
LaBella's James Jamerson set -- HIGH tension, major thud.
I seen ya' had all that Peavey gear and then noticed your
"location" -- you're in Hartley's backyard! Is that Fury string-
through? If so, you might wanna' consider an extra-long set.
For instance, T/I 36" or Roto 77 EL (Extra Long). I wouldn't
know about "fret noise" (strictly fretless

). The T/I (nickel)
Jazz flats are
very warm (imo). BUT, if you've got a heavy hand,
their low tension will take some gettin' used to.
I can't speak to Elixirs (ain't tried`em...yet). I'm sure somebody
will chime in.