Yes and no. Yes, to keep your life simple since you can easily put together a RegEx that works, but perhaps without really understanding what it is you've done.
If you'd like to really get into RegEx a bit, the Buddy is nice since you'll pick up a decent bit of knowledge due to the way it explains the component parts of the expression.
If you're interested in playing with some RegEx, please start a thread - sounds like there are some real experts on here, and I'd be interested in following along too