Maps from prestigious swiss company SwissTopo are now usable in CompeGPS. With them, you will be able to have proved quality cartography from any corner of the helvetic contry. 

6.4 version of CompeGPS Land/Air will be completely compatible with these files. Meanwhile, before official version is published, you can use them with fifth release candidate beta (rc5), that can be downloaded from "descargas > versiones beta".