Rich, Warm tone - Round core the way to go !
Been using these for about 3 years now, after trying all the other major brands, and these are far and away the best, nicest sounding strings i have used, and will continue to use.
These are made using a round core, which i believe helps make them sound so nice and smooth.
I find them very comfortable to play as well as staying in tune better than anything else tried.
After looking into how strings are made / processed, materials used etc., and doing a bit of research, it just makes more sense ( to me, anyway ) that a round core string will sound and perform better than a hex core.
You have full contact with the 'wrap' or 'wind' on the core when it is round, as opposed to a hex core, where you have 'space' between the wrap and the core because of the hex shape. Modern manufacturing technique's are what brought about the need for the hex core, moving away from the traditional round core.
These are rich and warm, with excellent sustain, and i have not looked elsewhere since finding the DR Pure Blue's strings, great string on all counts. Have recommended them to a number of other player's, and many of them have switched to these as well. Give them a try, i think you will be pleasantly surprised.
Strings and Beyond .Com has by far the best pricing anywhere for them, make's the choice very easy !!
ProsWarm Vintage Tone
Tuning is excellent and consistent
Uses a 'Round Core'