My 2 cents worth on this: GPS hardware
is only included with the iPad wwan version - i.e. 3g model - but no need to pay ATT anything - just the extra $130 up front to apple. My experience with a similar setup on my Lenovo t400 with 'high brightness' screen
and wwan/gps board is excellent - even compared to usb external 'best of breed' gps
. The ipad is unlikely to have the 690 nit screen
as on this lenovo so frankly imho the t400 is a better choice - if you already have a reliable win7 nav program e.g. rosepoint coastal explorer and want to use above deck
. If not, and you are primarily navigating down below I think the $629 ipad with navionics
nav is a reasonable choice. Regarding 3g/wifi on board in my experience the Verizon mifi card is a better choice as supports 5 devices with better coastal coverage than ATT. Just me and my mate = 2 laptops and 2 smartphones so there is 4 and ipad makes 5 [ipad for Louis our labrador - he loves animal planet on slingmedia and cannot use a qwery kb]
PS Two years ago verizon dumped me cuz I logged 700 GB's one month in Marathon FL - too much 3g tv. They said I took up half of that cell tower data traffic - ha. I think they are over that after losing a class action suit. Hopefully now they warn first.