Therefore there is no question that D'Addario Pro Arte provide at least 77 hours more of playing time than Savarez and cost less. Savarez usually last only 48 hours before the D string breaks somewhere between the 3rd and 5th fret.
As a side note, D'Addario Pro Arte durability is offset by a much harsher tone similar to bailing wire but the D'Addario Pro Arte harsh tone mellows out somewhat after about 24 hours of playing time.
From an economic perspective - those players who need as much mileage from strings as possible - D'Addario Pro Arte should be the first choice.
As a steel string acoustic and electric player, I find hard tension classical feel better to me. I play at intermediate level for classical guitar, so the Pro Arte' is a good choice all around.
they are not my favorite set, but they are good enough for most uses and are a 'known quantity' available everywhere and are priced well here...