On my Shen hybrid I've had a set of Obligatos and so far the G str. is great, D is very good, and the A & E are dead. I found that the lower strings didn't have as much upper freq. (lost in the mix syndrome) for pizz as I would have liked, though they did have a good fundamental and nice bowed sound before they died. For those interested I got about 6 months out of those suckers. OK before your sugestions I'll tell you where I've been. Kolstein Heritage strings are too loose for me. The tone was good for pizz and ok for bowing. Corelli strings are too thin sounding IMO. Helicore Hybrids are bland. I have not tried Dominants or Spirocores yet. I'm looking for a little more 'cut' when I pizz and still maintain a good bowed sound. I'm thinking I'll keep the G & D Oblig. on till they give out and try something else for the A & E. Would Dominants be a little brighter? Or do I have to get to Weich Spiros to get to the next level? Or am I missing something?