When I'm hiking with my friend, some of the time we hike together, but sometimes we hike separately, and may be some kilometres apart only to meet on the agreed location for the evening. Our next trip will be in an area with no trails at all, so we need good communication. Therefore, we're looking into getting a pair of walkie-talkies / two-way radio.
It appears such devices are often used for rock climbing, for baby alerts, etc. Those are all applications where both transceivers are less than a few hundred metres apart. We will be further apart. For a set of walkie-talkies small and solid enough to carry on a 2-week hike and costing no more than 100–200€, what is a typical range we can expect? I'd like to hear from actual experiences, rather than manufacturer claims. The area we'll be hiking in has mountains, but is quite open.