Depending upon your bankroll and purposes...
If I were buying 1 copy, I'd buy at my FLGS. They're the backbone retailers of the hobby who will be there if the big-box stores drop RPGs at some point.
If I were buying multiple copies- because I'm a Group Librarian type- I'd buy one at my FLGS and one at Target. Beyond that, all bets are off.
It's a vastly different culture now than when D&D first came out. The Internet allows a busy parent to research a topic much more easily then they might otherwise.
First Thessalonians tells Christians to "abstain from the appearance of evil." It would be really hard for me to believe in this day and age that Dungeons & Dragons could even appear as being that evil. Simplified it's overinvolved chess. Today's game isn't even as controversial as 3E was.
C.S. Lewis, the Christian apologist, wrote a book (the Screwtape Letters) purporting to be letters from one demon, giving advice to another demon. So if I handed someone the book, and told him it was full demonic advice, he might shun me, but not because the book is necessarily evil. Context matters, and the point of much of D&D is that the characters are fighting the demons, not hooking up with them (usually)...
Not to be a party pooper, but it's 2010. The more "modern" look on the second one is starting to look dated to me. Three-dee is out; painterly magical realism is in. Preloaded fonts are out; vintage sarif fonts are in. Look at the covers of Percy Jackson, Harry Potter, Pierce's Lioness books, Jonatha Strange, etc.
Context DOES matter...and most of the game's attackers will point out that its default settings include a polytheistic- thus anti-Christian- worldview.
Besides, given the choice, what would you rather have your kid be doing; playing at thieving and murder, running down innocent bystanders with a car and ... yeah, it gets worse... or playing at being a fantasy character fighting in a world of magic, struggling against evil?