Daddarios EXL110 are the best cost benefit in the market.
Packaging: They come freshly sealed agains corrosion from the factory in a plastic bag so no matter how long you take to open them, they will be there, intact. Other brands put their strings in some paper envelopes and if you take too long to use them, you?re gonna have a big surprise!
For beginners: They are very easy to assemble because the ball ends are identified by colours so it?s impossible to put a string in the wrong saddle/tuner.
Quality: They sound as it should, specially for metal, not so bright and not so dull. The durability is like any other string in the market made of nickel. Most people that complains about corrosion never cleans their fretboards or wash their hands before playing so it?s not a string fault.
For practising or lessons situation, they will become very dull in about 3-4 weeks but who wants a string in their guitar longer than that? It?s better changing your strings with more frequency because the moisture from your hands stick to the fretboard, pass to the strings, cause corrosion and start to sand your frets making them unlevelled.
Of course, for recording, if you play some style of music that requires brighter strings and with higher output, go for another model or brand but think in your pocket since you have to change your strings daily on a studio and on every gig.
Durability: They never broke in my hands, even playing death metal and abusing the floyd rose.