I had an opportunity to buy a new set of Innovation 140Bs (the braided core variety) for a good price and so far I've been quite impressed. They are excellent for arco, much superior to Obligato IMO. The Obligato arco tone is always too nasal for me. These are closer to Flexocors. Maybe even easier to bow in fact. The pizz tone is also quite nice, thick and gut-like. A good bit darker than Pirastro Pizzicatos but more lively to me than Eudoxa/Olive. I used them on a blues/swing gig tonight and got a good, loud, amplified, "gut" sound. They stayed in tune very well, too. My only complaint was for the first day that I had them on, I'd get a funny little vibrating buzz under my fingers (left hand) on the G string when I played certain notes. It seems to have subsided and I think this has to do with the new metal windings. I've experienced this with other new strings in the past. Also, the A seems to have a little less sustain than the E (at least on my bass) but it's still decent and has a full tone. The tension is a little stiffer than either Flexocor or Obligato but the set is well balanced and comfortable to play. I know there is another Innovation set, the 140H, which have a solid core and are supposed to be brighter. I'd be curious to try them, but I really like the arco on the 140B. And the pizz is very gut-like without being overly dull. The pizz is really pretty darn good for a string that bows this well. One of the best "hybrids" I've experienced. I'm curious how they will hold up and if my impression remains as favorable.