Good NRS Radios with Scramble Feature?

Hi all,

Have been searching for a good pair of FRS radios with scramble feature, to work with my work partner in parks.
They don't have to be waterproof.  The smaller the better.  The longer range the better as we work in steep hills and ravines.  Scramble feature to cut out background chatter and for privacy.  Less expensive is better, 'natch.
Just wondering if any hunter/hiker/camper types have found a good pair that they like.
Thanks, -HS