I would like to thank every one who has helped me so far in my quest for new strings. I have narrowed my decision down to the PIrastro Obligatos and the Corelli 370 Fortes. I am however having a very rough time deciding between the two. I do want a modern sound (not thumpy). But i also want a very warm tone. From what i have heard the Corelli 370 Forte is a warm string that can sing too and is easy to play. I play both jazz and classical. Is the Forte the gage that i want or the medium? I have heard that the mediums can be scratchy under the bow. Are the Forte strings still low tension and easy to play? Sorry that i am being so persistent and annoying about this topic!!