Your right Flakmunky the Ateca is a SE Tech 1.6TDI, ordered in Nov 2016 and delivered on 20th Dec, then put on our drive overnight of the 24th/25th Dec as the wife's christmas present. Its in Lava blue (i picked) with electric tailgate and a spare wheel option.
The Arona was ordered Dec 17 and delivered middle of Feb 18, I left it with the dealer until 16th March due to the snow then collected it (dealer was in Derby and I'm in Kent). It has the spare wheel as its only option and the wife picked the body and roof colour.
I'm happy with both, the dashboards design, screen layouts and info systems are the same (FR has touch screen to the SE buttons), and I've even set the radio stations up in the same order just to make moving between cars easier.
The SE has covered just over 10,000 miles and just had its first service and the FR has covered 5,900 miles.
Since having the FR its covered an area from Bluewater in Kent to Southampton to Reading up to Birmingham, Cambridge and London and in all those miles I've seen 1 other Arona in Milton Keynes.