What is really going to dictate what you need is how you plan on using it.
If you're just looking to rip DVDs, then HandBrake is the way to go. If you're doing video work or multimedia authoring of some sort, most of the native apps have DVD burning built in.
I am a long-time Toast user, from well back into the OS 9 days. I use Toast Titanium (v 7.x) for the most part, mainly because it integrates nicely with other programs, such as EyeTV. That being said, Toast is a very powerful app, and is often more than what the average user needs.
Give us an idea of what you plan to do - that would help narrow things down considerably.
MD