avalons any good or high maintance cars???

i'm trying too decide between the camry an avalon. we all know, camry is a low maintance car normally. but the avalon, there's very few sold. an a horriable resale car, which i don't resell. but all those bells an whisles on it. is it a high maintance car like cadiallics are. any of ya ever own one with 150,000 miles on it? plz tell me your expriences on high milage avalons. there are terrific buys on them with 40k miles. same price at that pt as a camry with same miles