Re: it's for the missus - whats money got to do with anything?
The extra £100-£150 on a spec for spec comparison is no news at all.
£210, actually (my real Nexus 7 32GB cellular, vs. "two weeks" iPad mini cellular, £239 vs £449). In fact, if you got your missus two Nexus 7 cellulars, and 145 tracks from Amazon or Google, it would cost exactly the same as one iPad mini cellular, and 145 tracks from iTunes. Perhaps you'd better not tell her that. On the other hand, you could get her a Nexus 4 phone, and and a Nexus 7 cellular, and a bunch of flowers with the change from £449.
Don't know what an iCosystem is, but my Galaxy Nexus phone and Nexus-7 sync apps automatically, with no intervention on my part. Any my wife thinks I've done magic as well. The apps on my phone just appeared on the Nexus 7 during installation. And the display on the Nexus 7 is proper HD, at 1280x800, and you have to dick about to pretend to show HD on the mini's 1024x768 display.
And LTE (ie. what the marketing guys call "4G")? Good luck with that. I can barely get internet access from Vodafone, even when I'm connected on HSPA+. When I do get a connection I'm lucky to get a couple of hundred kbits/s. It has taken over 12 years to get to this state on 3G - by the time the operators have agreed on what 4G is and have installed all the new kit, and have any bandwidth, all my current kit will be landfill.