The answer is easy: their kids.

A perfect example of this was evident last week as I waited with baited breath to receive my new iPhone 4 via FedEx on Wednesday.

Because the release of my new favorite gadget came just a few short days before my daughter’s 13th birthday, I promised to hand down my iPhone 3Gs to her when my new one arrived. Being a teen now, I felt it OK to give her one of her own since I had it and no longer had any use for it. The phone, combined with great parental limit controls from AT&T Wireless, means she can enjoy the tech her Dad loves to talk about without me receiving some sort of $4,000 bill in the mail.

Leading up to my new phone’s delivery date, my daughter started peppering me with questions about how to use the iPhone. She started looking a new cases online and I even caught her checking out the phone when I was in the other room. My new phone hadn’t arrived and already my daughter had plans for my current phone.

It’s then that I realized how lucky my kids are that their Dad is such a gadget head. Anytime Dad gets something new, the kids get to snag the older device which is still pretty new and killer. This puts them at a significant advantage over some of their friends who have parents in their late 50s tooling around with that shiny new Jitterbug.

Whether its the old MacBook, an old TV or even my old Passport external hard drive, my kids all get them when they’re relatively new. That means they get the best of the best more frequently than most kids.

That got me to thinking.

Should I be passing it on or should I perhaps make them use older tech to better appreciate it when they do get it?

In the case of my daughter, for the last year (since we did get her a limited use cell phone) she did use a much “lower tech” ” and “un” smart phone. That phone worked well for her and the limited calls and texting she took part in with family and school friends. She learned to do things on that phone so her move to a barely used iPhone is something I know she appreciates. She’s also an honor roll student (98%!) and works hard during school so she earned it.

At the same time, her Mom and I definitely think we need to start maybe ratcheting back the cool gadget “hand-me-down” process. When your nine year-old starts asking if he gets your iPhone when the new one comes out, you might need to better manage expectations.

At the end of the day, my kids are lucky to have a Dad at the forefront of technology gadgetry. Not only am I cutting-edge cool, but they are too.

Follow Scott on Twitter @sdgully or email him at sgulbransen@gmail.com. His personal blog, where he writes about leadership, public relations and social media, is www.scottgulbransen.com. Scott also a contributor on Technorati,  to the Shamable Blog, The Friarhood, and is the Sr. Director of Global Public Relations for Sony Online Entertainment.