Maximum PC: Analysts came up short in predicting just how popular tablets would be in 2012, which according to preliminary data from International Data Corporation (IDC) grew 75.3 percent year-over-year in the fourth quarter. Tablet shipments topped 52.5 million units worldwide in Q4, and to put that number into perspective, the same research firm says PC shipments reached 89.8 million units in the same quarter.
But that said if I wanted to use it as an E-Reader then the surface screen is to big for it the same as the Ipad. I would tell anyone to look at a 7" tablet if they want it more for ereading than anything else.
Also The Surface can replace 99.9% of general users home pc's because they tend to use it for Music, Videos, Facebook, pictures, Office and web browsing. But this is windows 8 in general not just the surface. Android tablets and the Ipads can not do all of this in the same was as windows 8 and RT.
But like I said it all depends on what people want depends on what they should go for.
If they want to keep there current pc and want a Media device that they can pickup and play with then look at the 10" tablets. If they want a Ereader and the odd bit of web browsing then look at the 7" tablets and if they want something that can replace there home pc but be portable look at the Windows 8/RT devices.
And yes, i know theres the whole OEM price wars they are avoiding.