The 3 with which I'm most comfortable are:
Roxio's EZ Media Creator
Sonic Solution's Record Now (Note: Sonic Solutions has been acquired by Roxio - this app is distinct from Roxio's EZ Media Creator)
Ahead Software's Nero 7
Of those 3, if I hadda pick a favorite, it'd prolly be Nero, but each have their good points and bad points, at least from my perspective; anybody else's mileage may be expected to vary. I am not recommending any of them, I'm just saying I'm fairly familiar with them, use them, and find the each in its own way to be more or less satifactory. They pretty much all reliably do what they're supposed to do.
Particularly for those not exactly of the Übergeek persuasion, sticking to major name-brand product generally is the way to go. Before deciding on any, whether one of those I listed or others, read as many reviews as you can find and review the vendor's product FAQs - even check out the vendors' product user forums; most vendors have them. Its a good idea to verify the software supports your burner - exceptions are rare, but they exist. You also should make certain you have the latest appropriate drivers/related software for your particular burner before going any further. Once you settle on an app, be sure to read, understand, and follow its documentation, and know how to contact the vendor for support.
Trial or evaluation versions, if available, even with limited feature sets/capabilities, can be useful in determing what's right for you.
When considering reviews, weight professional (editors) opinions heavier than user opinions, and bear in mind that a very great many negative user opinions stem from the user involved not having familiarizes him/herself with the product's documentation/instructions - ignorant or confused user is far, far more common than faulty major-vendor software.