Voler has different "levels" of quality. Our club/team went with Voler. (I was the only who pushed for Sugoi because I read in the Race forum that their RS Bibs are the best) I did try on samples of the Voler and it seemed decent.
Anyway the only reason to go with Voler is because of a team/group/club custom design purchase. If you are buying only for yourself, you have lots of options. If price is a factor you might as well get Hammer Nutrition gear/kit.