I'm on the verge of buying a pair of mechanix originals. But choosing the right size is puzzling. At WalMart today, I first tried on "large" ...felt very tight, especially when making a fist. Then I tried "x-large" ... snug, but fit was tolerable everywhere except the fingertips, which were slightly too long. I know mechanix gloves are supposed to have fingertips that fit nicely, allowing moderately fine work. When I got home, I went to mechanix' website and printed their sizing chart. It says I need a medium. The gloves are all synthetic materials, so I'm wondering whether they break-in as a leather glove would. Should I trust mechanix' chart and get mediums?