I don't think there is some specific orientation. Just depends on the regional.
Pucks can be found at two places. If you want to buy in bulk, like 70 pucks, then go to
http://www.logoloc.com/first/RNR/200...its/Pucks.html .
If you only want like 6 or 12 for a cheaper price, visit
http://store.thestreethockeyshop.com/flhopu3pa.html . These pucks are the same pucks that will be used in competition.