Go for the deal at R1K. I just bought my wife the the XL 3 weeks back for R2K. A standalone navigator is so much better than a phones.
OK, I just checked the ad and its amazing. The RRP is R1600 (I nearly bought this one). Game has this one on special for R1100 but only with South African maps.
They do say it has maps on SD card which implies its the previous generation. (Yes it is the previous generation, the model that replaces it RRP R1900). No issue with them. The newer generation is a fleas hair thinner and no external SD card reader.
I did get an opportunity last month to test out 7 different navigator apps. They where all installed on a special demo unit navigator running WindowsCE. Getting to the point I saw that there where only 2 worth it: TomTom & Garmin
TomTom has the upper hand as the map upgrades are currently free and you can easly download/upload corrections from the web.