I couldn't be more pleased to be answering so many questions about this :)

It really depends on what are your economic possibilities and personal likings. Some families look for villages, peaceful and quiet, good living standards, very low cost, but somewhat isolated (though internet is starting to change that). Some others look for "countries", which are made up villages but closer to bigger cities, more fit for upper-middle classes (if your salary is in dollars, even with minimum wages it will be totally under the budget for you). Some people love the cities suburbs, some love the city itself. You can find all kind of costs. I found a cheap apartment in the city I live, but some others, even close to mine, can be much more expensive.

It also depends on what climate and entourage you like. Some people comes to settle in the south, some in the north, some in Buenos Aires. If it's about budget, there is a mix of everything anywhere, with the constant that villages tend to be the cheapest option anywhere, but again that's not for everyone.

About low crime, again, villages are the most peaceful places, most of them with no crime at all, for they are so small that everyone knows everyone personally. There are thousands of villages per state, so I can not suggest one specifically. You might want to come to visit if it's within your economic possibilities, and discover them while travelling. Cities are still full of crime, but Milei is pursuing reforms to change that soon, for safety is intrinsically part of the economic recovery policy.

About rich culture, Buenos Aires remains unbeatable, it's THE place if that's something you value much. All other big cities have their decent quotas of rich culture, but it doesn't hit your face like in Buenos Aires. By far and large, and expectably, Buenos Aires haves the most expensive places to live in Argentina, the closest you are to the capital. But again, if you come with a salary in USD (if you are a programmer for example), you can have the time of your life there, and literally anywhere else.