I have used a couple of products both made by the Russian Garmin Distributor. (by the way to read their maps which are predominantly in cyrillic, you need to have your garmin updated by the Distributor (they flash your Garmin unit with a new modified operating system) ... it can then read their cyrillic maps. But you lose the ability to read non standard latin characters that are widely used in Europe ... and reading maps in Germany or France or Spain or Scandinavia becomes a complete pain in the nuts ... characters such as these "æ ë ü ć ß Ø ň ő" etc become unreadable as their place is taken by cyrillic characters.

I have had the conversion done so that my GPS unit reads cyrillic, and now is wierd in western europe ... specifically so that I can read the products from the Russian Garmin franchise ... which are Topo 6, and I believe City Nav Russia is the other one. I use them occasionally to cross reference stuff. Topo 6 has a lot of detail, and I believe CN Russia is just a cheaper version of Topo 6, without as much detail of tracks, trails and of course topographic detail. My issue with them is in many areas (particularly out of the way areas) they are wildly inaccurate. They seem to have been complied by scans (probably of hard to get military maps) ... because the problems with the maps are consistent with the scanning of maps. The position of roads is not quite correct. Out sometimes by 500 -1000 metres (failure to accurately get the latitude and longitude reference points on the maps verified and cross referenced or scanned maps not of sufficient scale and accuracy) and there is sometimes faily out of date info .. towns or roads that no longer exist.

I have both the very detailed "Topo 6" maps on SD and OSM maps in the hard memory of the Garmin and have the ability to flick between the two (for cross referencing) but I have found I am using the OSM maps 98% of the time - mainly due to accuracy frustrations with the locally made maps. Topo6 will often have more detail ... however... (and sometimes a lot less).

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