I prefer Xfburn over Brasero for two main reasons. As mentioned above its quite fast and light on resources + although not much but since Brasero (the Gnome desktop's default app) won't even let you change things like the buffer size out of its arrogant being simple "philosophy".
Xfburn on the other hand lets you change few settings that are necessary for better stability and controllability, if you are a bit of a "advanced" geek :P but please be aware that if you want to compile a video DVD for instance ... then you'll be better off with Brasero since Xfburn does not have that implemented at the moment. But for the usual burning "jobs" this is quite handy.
*. Just like other CD/DVD burning applications Xfburn also has built in wizard type welcome screen from which you can choose -
1. Burn an Image (ISO, etc).
2. Create a new data compilation (switch between various CD/DVD sizes from 200 MB - 7.9 GB).
3. Blank a disk.
4. Create an Audio CD.
*. Separate file explorer window integration.
*. Under the "Preference" window as mentioned before you can change the buffer size, show hidden files, change the "tmp" file directory, detected devices list, etc.
|On the "negative" side, it doesn't seem to support "plug-in" at the moment...|
Well that's about it actually. You can install Xfburn 0.4.3 (current version) in Ubuntu 11.04 Natty Narwhal, 10.10 and 10.04 by using the below command in your Terminal window. How to Install Xfburn (CD/DVD burner) in Ubuntu 11.04 Natty Narwhal, 10.10 and 10.04?
sudo apt-get install xfburn
That should do it. You can use multiple optical disk burning applications without any "collusions" as well. Enjoy!.