DR strings are different because they are created with their "Tite Fit" compression winding which results in a slightly thinner gauge string with tension equal to a larger size. This makes them easy to bend and they last a long time without a coating. They are also a round core string which adds warmth and sustain. Players like Peter Rowan and Charlie Hunter have been using DR strings for years. DR Sunbeam RCA-12Gauges: 12, 16, 24, 32, 42, 54. Equivalent to other brands light gauge. The round core and Tite Fit compression winding make the DR sunbeam strings easy to bend, give them a brighter edge and cause them to last a long, long time without a coating. DR Sunbeam RCA-12 DRRCA12Regular price: $15.99Sale price: $8.99 DR Sunbeam Roundcore RCA-13Gauges: 13, 17, 26, 34, 45, 56. Equivalent to other brands Medium gauge. The round core and Tite Fit compression winding make the DR sunbeam strings easy to bend, give them a brighter edge and cause them to last a long, long time without a coating. DR Sunbeam Roundcore RCA-13 DRRCA13Regular price: $15.99Sale price: $8.99