I have been using a Vaio Z for 1.66345 years now, and it was great, up until the battery began to lose capacity. I have it on for about 18 hours per day, but I don't always look at it, as I do other things, like work and eat and sleep, but not during the day, so the sleeping part doesn't really count. Come to think of it, the working part doesn't count either. I like to surf.
Anyway, once the battery began to lose capacity about 0.32615 years ago, the fan began to go full bore all the time . . pushing the machine over to the right, causing me to mis-type all the time. I hav e sntt rt back to Son wrh a kpybtg prblw . . . hopefttty undwr warntty.
It is very light too; I accidentally forgot it was in my armpit while unlocking and opening my vehicle the other day . . . with a key, I might add, as I am not the tekkie type that must have keyless entry. The Z did a major header on the ground, denting the casing and causing me to think that the new carbon fibre Z would be good for my diet, and my daughter could definitely use another hand-me-down.
I hope Sony doesn't notice the dent.
Oh, and the 128 gig SSD . . . way too small. Gotta get the 512 on the next one. Oh, and one last thing: you need 2 hands to open the lid, because it is so light, the keyboard follows the lid on the way up. Very irritating. And at $2000, it begs to be a business write-off, as a personal buy, as $2000 is a little over the top.