My son <15> has one and a console game too, we hold them and have him check them out for use.
The up side is they are fun and they can be used as a preformance award, "Handle" to improve behavour.
The down side is that they can become a source of famly friction, and encorage obsseive intrest.
Your decision, It works for us, but it is not a "Fire and forget" option. Parental involvement is a must.
Gunns