I use these when I don't mind changing my strings every couple of weeks. When I'm in a lazy phase (or I know I'll be too busy to bother), I use D'addario's EXP16 Lights, the coated version of these strings. They let me go about six weeks before I have to change them.
Price: $5.99 (new)
Where Obtained: Sam Ash Music
These strings range from .012 to .053 inches in size. The ball ends are turned from solid brass stock to prevent cutting into bridges and tops. Each string has three lock twists to help prevent premature breakage. Core wire is made from hexagonally shaped, high-carbon steel. The six edges of this core wire bite into the phosphor-bronze wrap wire, securing it along its length.
I use these on a Yamaha APX-4A thinbody acoustic-electric and old beater dreadnaught. I play fingerstyle and I strum. I play all types of music on these: liturgical, blues, folk. For both fingerstyle and folk they work well. I amplify both guitars through a either a Fender Acoustasonic Jr. or a Peavey house P.A.
Sometimes there's a little too much finger noise for my taste when I move my left hand around quickly on the fretboard. I tried comparable Martin strings on the Yamaha, but were noticably more tinny sounding. I sometimes use D'addario's coated version of these strings to get more longevity. Those sound comparable to these strings.
The strings on my Yamaha get about 8 hours of use per week. With this schedule, and my greasy, sweaty fingertips, I have to change them every 2-3 weeks.
I'm a stickler for tuning before each practice/rehearsal/performance. But I rarely find these go out of tune.
From time to time I'm strumming quite heavily. I've never had one of these strings break on me.
I love these strings. They are more stable, do not deteriorate as quickly as others I have used, they keep the new sound longer than others I have used.
Price: $17.95 $AUD (new)
Where Obtained: Royce Music House
Coloured ends make it easy NOT to make mistakes when you are in a hurry restringing.
I seem to have settled with these strings for my Peavey Accoustic Electric. Best performance over many different varieties of different strings over the three years I have played this guitar.
Depending on heat and humidity, these last the longest with that crunchy new sound. Changing depends on how busy I get, usually three to four times a month if I am playing a lot of jobs, less in winter. Not being a highly paid musician, I would probably change them a little more often but I have no real complaints.