just went through what you're going through.
however i'm a diesel head... that may stop you there.
my old a6 2.7tdi quattro has stood the test of time well, 260 thousand miles with very little work done, swirl flaps removed almost 200 thousand miles ago, rear shocks about a year ago and thats it apart from normal servicing ..i'm a bit fussy about oil, very important in diesels especially vw/audi and bmw in my opinion. we looked at a range of cars, herself and me. i wanted something big and comfortable and tidy looking..something like yourself i think (what you want, not you in particular) she wanted something smaller and easy run.
my list was jaguar xf , audi a 5/6/7/8 bmw 640d/730d, a granada or cortina would also have pleased me but i was never getting away with the last two.
the xf was discounted as reliability problems seem too frequent.
the 2 litre offerings from both bmw and audi have gone to pot reliability wise, the 2.0 vw effort has seen some improvement but not enough for me, the bmw 4 cylinder diesel is just pants.
now we are driving the same a6 as we couldn't agree on a replacement.
couple of suggestions, bmw 335d, decat and a wee tune up and you've m3 power with the reliable 6 pot diesel, i know you're a landrover guy so either a discovery or range rover... lot of car for the money and plenty of specialists for problems, i would avoid a range rover that's been garaged up for a period of time though, they dont like sitting idle. v8 is easier run than the v6.
a golf, that said we have one sitting here that everyone drove when my daughters were needing cars for ...whatever we needed, but thats not good enough now...well she's back in the audi and i'm happy enough in the defender.