I love K3B. It does everything that I want. It is fast and accurate. I am
sure that many Ubuntu users use it over GNOME's burners. K3B is part of KDE.
It stands for KDE Burn, Baby, Burn or K3B for short. The KDE vs GNOME
argument rages on and will continue as GNOME 3 gets closer to release.
Fortunately for users you do not have to be strictly one or the other, but
can mix and match, as you have done.

KDE apps that I prefer are Choqok to Gwibber, Kopete to Empathy, K3B to
Brasero, Klibido to Pan, Kwallet to GNOME keyring, Rekonq to Epiphany,
Okular to Evince, DigiKam to Shotwell. Where GNOME is better: Cheese to
webKam, GIMP to Krita, Nautilus to Dolphin, Inkscape to Karbon14. Some are a
tie in my book, Amarok and Rhythmbox, Xchat and Quassel and Kmail and
Evolution. It all depends on personal preferences and what you are looking
for.