I am on another parenting site (have been going there since my oldest was a baby and she is almost 12 now) and I have 2 friends from that site who live in the area so I solicited there advice on your question - I am going to just copy and paste what they told me and hoefully it will help. If you want to contact me via email after you read their thoughts I can get you more info.
Here it is:
"the Biltmore area is really nice. Neighborhoods can get spotty around the area depending on which way you go, but generally closer to the mountain is always a good safe bet. I'd love to live in that area, which I believe is considered Paradise Valley. Expensive but really beautiful and safe. If he's going to work there, I'd say it's pretty central and he can live in many places with a decent commute. I'd consider living north of there as his commute will be reverse and traffic shouldn't be too much of an issue. If he goes south, to say chandler, tempe, mesa.... he's going to have a miserable commute. Scottsdale wouldn't be out of the question, actually. (I'm rather partial ;-))If they start looking around there, W., let me know specifics of where and I'll opine on his commute. Scottsdale is FULL of great parks, again if they wind up there and let me know where and I'll let you know about schools etc. North Scottsdale is better than South Scottsdale in terms of schools. Happy to help, bring on as many questions as needed, it's a big change!!!......"
"The Biltmore area is nice, but it's nice for businesses, not living. Unless they can afford a $2 million house on the mountain, I would steer clear of that area all together. Everyone that works over there commutes from other places. So it pretty much depends on their price range and commute time that they're willing to do will help them find the best place. They need to avoid Phoenix all together.
I grew up on the "Westside", so I'm pretty particial to this side of town, Lisa (this is the first person who responded from my other site) doesn't venture past Central unless it's for sushi (inside joke on that one) . She needs to really decide how important the schools are because Phoenix and many of the surrounding areas have awful public education. Peoria is rated as one of the best school districts in the counrty and that about 45 minutes from the Biltmore. The entire Valley is broken up into two groups, "eastside" and "westside", it pretty much depends on which side she wants to go to. Both have beautiful master planned communities and good school districts, she just needs to decide what side because the Biltmore is literally in the middle. If she's looking on this side of town I have a WONDERFUL realtor that is a dream to work with and I can give you his number.
Just FYI, here are the best options for commuting from the Biltmore:
Westside: Glendale, Peoria, Anthem...The cities she needs to AVOID at all costs, Avondale, Laveen, El Mirage, Buckeye and Surprise.
Eastside: Fountain Hills, North Scottsdale, Gilbert....AVOID Maricopa, Chandler, Apache Junction, and South Scottsdale
I hope this helps and like I said, I have a great realtor who can help her out and he was born and raised here too