flybymike
Thanks for all the info.
I see no way to beat your set up?!
Although I don't want to rush in, having read the above comments (thanks Guys) I think I'll go for an iPad Mini and the SkyDemon option (SkyDemon recommend the iPad Mini for use with their software). It will only be used for recreational flying in any event and the iPad has the flexibility to be used for the other purposes for which tablets are so useful.
Although the initial subscription to SkyDemon is relatively high, I won't have the cost of a monthly sim card - and the combination of iPad Mini and SkyDemon subscription will be comparable to the cost of a portable GPS device in any event.
Cheers