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Deleted member 1183
There are pros and cons to them all. For 9 years I have used a Zumo 550. It is still running well. This year I found it a little lacking in speed and precision when negotiating some very complex road junctions on mainland Europe. When I returned I purchased a Zumo 590. It has much better reaction response when one is offroute and it also has some other very good features such as lane assist and "up ahead" showing petrol stations and other facilities imminent. However there is a lot of stuff available on the 590 that is no use to me whatsoever and this makes negotiating its menus very complex. Furthermore the screen is not as easy to read. Imho the simplicity and ease of use of the old 550 has been dispensed with and as such that is the downside. I still run the 550 and will continue to do so for as long as it survives. The 550 is also much better at running offroad routes that have been transferred from PC.