I carried a glock for years with work and when I switched jobs about 6 years ago I felt I needed something lighter and deffentaly single stacked. I had grown to love how the glock operated and how the trigger pull was but glock didn't make a "compact" single stacked pistol. I looked for a while...
By far the best deal in 60 shafts are East Coast Gear Supply's lifetime shafts. They warranty them there and have excellent customer service! Plus I think it'd be hard to beat the price.
http://www.nc4x4.com/forum/index.php?threads/usa-made-d60-d44-stub-shafts.136205/