Ipod Touch and Magellan Toughcase - Reasonable GPS device??

[toys19]

I am in the lucky position to have been given a late model ipod touch (which as far as I can see is an iphone without a phone/3g/gps) . It does not have on board GPS but with the addition of the magellan toughcase (pocketgpsworld review here) it can be made into a gps device. Has anyone any experience, specifically, of using the Ipod Touch with this GPS case add on? Is it any good. I'm thinking of splashing the 142 quid for the case to make my free ipod touch useful as a gps tracker and navigation device..

[Kritou]

You could spend a lot less on a BT GPS and the roqyGPS app. eBay is your friend for a cheap GPSR
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