I have both a rino 110 (low end) and Rino 530HCX (high end). Some comments on my experiences with them.
Rino 110 -- accuracy good. WAAS capable. Sometimes more accuract with WAAS off!. Satelite reception very good outside; fair indoors, very tight ravines. Radio works well with a max 2 watt on GMRS channels. Range is 1 to 1.5 miles line of sight. About 3/4 mile woods with no hills in line of sight.
Rino 530 -- Accuracy very good. WAAS capable. Satelite reception good indoors. By indoors I mean a house with aluminum siding. Malls etc. would be much less if at all due primarily to RF interference. Outdoors even works well in tight ravines. Radio works with a max of 5 watts on GMRS channels. Range is around 2 miles line of sight. Around 1 to 1.5 miles range in woods with no hills in line of sight. The finder should have this unit because of its ability to overlay topo maps. The 110 unit cannot do this.
Each unit can poll to other providing that they are transmitting/recv. on same channel and privacy code. The goto function works very well.
I have had some difficulty communicating with other GMRS or FRS units using the privacy code. (most notably the Motorola units) No problems on open channel use however.
Both units have as their limiting feature on the radio, the antenna. However the short antenna allows ease of use.
