There are known brands, who behave in general well, such as TDK, Mitsui, Philips, Sony, Verbatim. You also can try Fuji, BASF, this brands are made by Ritek.
You have to figure out yourself, which are best for your particular gears.
Burning with 2x speed can increase the burnpattern.
CDRW is in general no good choise for audioburning, you are condammed to play them on your CDromplayer.