Hello MDN64,
Sorry to hear what happend to your MBA and I can imagine how it feels. I also have the 2013 13 inch MacBook Air and also had the problem where I lost some research data. I've been using products since 2009 and that was the first time i've ever lost data. It was painful but their subsequent update fixed it for me and over 2 to 3 months now, i've not had an instance of it re-occur. I know it has not been the same for some and hope they find a solution.
However I think advising people not to buy products because of your experience is a bit going over becasue i think products we use are a matter of preference. It's ok to share your experience using products but this experience does not apply to many, much less to all.
My experience using other computers from other manufacturers has been terrible, and even my experience troubleshooting other computers for my colleauges at work is very frustrating. Our IT department actually keeps saying that they see more people getting computers but very few of them come in with problems with their machine that needs fixing.
So I DEFINITELY disagree with you that products lack quality but understand that your speaking from the experience you had. Again, am speaking from my own personal experience.
To me, 's problem is that because they take their time to make the best products, we sometimes forget they are also human beings prone to errors and mistakes like every other human being.
I've used my MacBook Pro from 2009 and gave it to my girlfriend in 2013 and my goodness, it's still brand new and rocking Mavericks all around in top condition. Same goes for my iPhone, iPad and my iMac.
Anyway, I do wish you the best and hope your MBP serves you well. I always say technology, which is a tool and nothing more: "its a matter of preference". We are all different and prefer tools based on our preference.
Cheers!