Gentleman, Have just completed a re-string of the bass. I have removed my set of "Corelli's" and have just installed my FIRST ever set of "Obligatos" on the advice from these pages...ie:- The majority of players that replied to my "String God's/ What strings are you using threads".The consenses of opinion seemed to lead towards "Obligatos".... So thanks to Quinn's and world postage I have a set of Obligatos slowlyyyyyyy settling into it's new home. Things I have noted straight away. 1. The guage of the Obligatos to the Corelli's. in particular E string...At a guess I would say the E Oblgato would be at least HALF as thick again as the E Corelli. infact had to file out the hole on the tail piece to get the E and G to sit in place. 2. Maybe I 've had the Corelli on so long I've forget how THEY sounded when I first began to work them in however, the Obligatos leave an OVERTONE .... A Click after each note is played... I figure that it will take a little more playing to work these string in.. this is of course when amplified only! Any comments on this one? 3. Lastly, I know they have only been on the bass about two hours , but I gotta say that as far as sound, sustain,ease of playing.... the Corelli's are great strings. ( I know it's early days).