Those are good but two things:I bought these a couple years ago and work great. I can't vouch for the distance as I've never gone out 15 miles, but they say they range up to 38 miles.
http://www.rangerjoes.com/Midland-X-TALKER-T71VP3-Radio-P11125.aspx
1. The range is extremely exaggerated. 5 miles max about what you can expect.
2. If you operate on the GMRS channels, you need a license to operate legally. FRS channels can be used without a license but power (and range) is limited.
Full disclosure: I am licensed GMRS as well as HAM. WQVI806, K4ZRI