Help, Ford or holden

[big JB TRX450r]

Gday every1, i know your reading the topic & thinking "what tha?" but i need help from all of you. ill explain, i am buying a near-new family car. My other half has her eye on a 05 XR6 MkII with 14,400km on the clock & we have seen a few holdens that are appealing to. now keep in mind we r not holden nor r we ford lovers. At the end of the day they r all the same to me. Ive driven both brands & different models, they both ride smooth, brake well, have similar features, steer much the same & have the desired room we need. My problem is if i ask someone advice they will either like fords or holdens, now if my other half wants the XR6 thats cool & i actually like the look of them myself but!, the down side is i seem to hear the same thing about "falcons" in general, radiators will block from the bottom regardless of age, heads warping, head gaskets blowing time & time again...& i also hear other storys of owners taking them back to the dealers over little things. If i buy this XR6 is it going to give me an endless migrane, please give me facts based on people who have owned these cars...i dont speed or flog cars, most of the time i have the kiddies with me so im pretty tame behind the wheel....any opinions would b most helpful...cheers

PS. buying a car this tuesday so hit me with some advice