I have an iPhone4 (replacing a 3GS), an iPad3 (replacing an original iPad), and a Macbook Air (replacing a MacBookPro15) and I'm starting to get very nervous about AAPL.
I'm concerned that they are loving towards locking down OS X in a similar fashion to iOS. I wasn't particularly fond of the walled-garden but it was such an improvement that I put up with it. No other products really matched the level of integration that I was craving. A faustian bargain, really.
My wife just got me a Nexus 7 tablet. I find myself really enjoying it. It's thin and light and very, very fast.
And more importantly, it's open. I run Linux on my home servers and I really enjoy Linux as an operating environment. It's just that as a "daily-driver" OS, it's just too rough around the edges to really be at the same level as something like OS X. Android is probably the first example of a truly user-friendly UI for Linux. (note: I know that Android isn't really Linux; I'm making a point about openness and fit/finish/integration)
Anyhow, I'm really conflicted about upgrading to the iPhone5. On one hand, my relationship with AAPL has been pretty good from a customer-relations standpoint. On the other hand, I'm frustrated by the design compromises that seem to be made largely for the convenience/profit of AAPL than their users.