Welcome to the forum. I second the suggestion to go with TY or Verbatim. Some very good companies to deal with, in order, are:
Rima.com, Newegg.com, Amazon.com, Supermediastore.com, Meritline.com, Allmediaoutlet.com, and shop4tech.com. They all sell both media. One caveat, Meritline sells "High Quality" media with a TY code. It is NOT genuine TY.