So while you have done well with your Dell, it's not the only one. Check out HP, Toshiba and some of the others; you might find one of them that's closer to "perfect" for your needs.
I'm not anti-Tablet and I'm not necessarily an Apple fanatic, though I admit I've found Apple to offer the best product for my overall needs with software and reliability. My complaints with other OSes and hardware brands has been mostly due to the poor quality on average of those "less expensive" brands that require regular maintenance. I can't tell you how upsetting it is when you lose an entire work day to cleaning up the OS after 6 to 9 months of everyday use or having a power supply die for no apparent reason every 12 months or so (I've never had one survive longer than about 18 months and I always bought more power supply than the machine needed according to specs. Apple just holds up better for my work habits. Windows' greatest problems have been due to poor hardware, though that doesn't absolve it of its own weaknesses and vulnerabilities over the years. Android, on the other hand, suffered from poor code and poor hardware. Worse, Samsung even now is producing Android products that use 2.3 (think Galaxy Player) which only hurts their overall quality for the product name as people will expect the same OS as their Galaxy S3 and Galaxy Note. Other brands are still shipping with older versions of Android as well, which is one reason why the Android environment as a whole is so fragmented.
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