When Garmin released its first live-enabled sat-nav in the UK, the nuvi 1690, it seemed like finally TomTom had a heavyweight competitor. But Garmin hasn't followed up that promising start with further devices, until now. The nuLink! 2300 series represents Garmin's latest foray into the world of sat-nav interactive data services, and it has a couple of unique tricks up its sleeve. The 2320 is the baby of the range, with UK and Ireland maps, whilst the 2340 extends coverage to Western Europe, and the 2390 adds more European maps and extra features.