What's the best out of the Navman iCN 510
http://www.navman.com/land/products/icn510/index.html
and the TomTom Go 300
http://www.tomtom.com/products/produ...=72&Language=1
And while we're at it, this Dell PDA/GPS combo comes in at over £100 cheaper than the iCN 510
http://www1.euro.dell.com/content/pr...hs1&l=en&s=dhs
Is there any major disadvantage from buying a PDA/GPS combo rather than an all-in-one solution?
Thanks