chaosmegnet knows his stuff.

we use them around the ranch. we're very remote but even then the best we can do, without line-of-sight, is just a mile or two.

i recently "upgraded" to the "water-proof" Midland GXT1000VP4 36-Mile FRS/GMRS after i destroyed the last set in the rain because they weren't waterproof.

amazon has 'em for under $60/set: http://www.amazon.com/Midland-GXT1000VP4-36-Mile-50-Channel-Two-Way/dp/B001WMFYH4