i actually like the La Bella set, i've been using the 980 set for several months now, really enjoying all 4 strings, the feel, the evenness of tone across the bass, the sustain to thump ratio, even bowing (with the right rosin and some right hand adjustments). as much as i like them, if the Gamuts are really twice as nice, i'm in for a real treat some day...
but for now, count me as someone who does use and enjoy pretty much everything about the La Bella guts, that's the plain G/D and wrapped A/E. i've compared them to the Chorda set which is all out of balance from string to string and hard to play on. i think i had a Efrano or Lenzner G once, wasn't impressed.
btw, i use the La Bellas with a really old ply. and a underwood and a GK MB150.