I think the best depends on how much you're willing to pay. If your prepago all 3 are rubbish. Over 200 pesos a month and they'll take care of you.
I recently moved from Claro prepago to Movistar prepago partly because I was frustrated with all the promo messages and the fact that how long my credit lasted didn't seem to correlate with how much I used it. Movistar send me twice as many messages, and the service coverage is a bit patchy.
I wouldn't dream of trying Personal after seeing various Argentine friends mount anti-Personal facebook campaigns, they're obviously doing something wrong...
I recently moved from Claro prepago to Movistar prepago partly because I was frustrated with all the promo messages and the fact that how long my credit lasted didn't seem to correlate with how much I used it. Movistar send me twice as many messages, and the service coverage is a bit patchy.
I wouldn't dream of trying Personal after seeing various Argentine friends mount anti-Personal facebook campaigns, they're obviously doing something wrong...