G'Day,

Using a Garmin Zumo220 -Australian Version- and the Garmin map (card) with very good results.
My Garmin GPS has no offset compared to my mates Garmin Zumo660 -German Version- (he had his unit's offset corrected, his GPS was off by around 500m).

City Navigator China NT (microSD™/ SD™ card)
https://buy.garmin.com/shop/shop.do?cID=253&pID=30217