True....let's go through them one by one.
Less expensive....it is
More usable space......it's expandable.....really no limit and at only 25 a pop for 32 gig.
Apps.....it's running full Windows. Love or hate MS, everything that works on a PC for the last 10 years will work....and with an i5 processor and 4000 graphics, I think it is prolly quite a bit more powerful than an iPad for just a couple hundred more.
Cellular options......handy...but my iPhone is a hotspot.
Lighter and thinner......true.....but not dramatically so.
Battery life....there in lies a true rub. I'd want 6 hours but the difference will probably be significant.
Your counters are expected and mostly valid. I would argue that if you're using it as a tablet then a USB stick or external HDD sticking out of your Surface is far from ideal. And having Core-i5 is great but it's a ULV Core-i5 on a 10" display. Plenty of Windows apps won't work to well on that system.
I 'm certainly not saying there is no market or uses for the Surface Pro but if you look at the what tablets are used for and how they are used I think you'll see the market much prefers the iPad. I use Prompt, Screens and LogMeIn to connect my iPad to Windows. I have absolutely no interest in a device that isn't an ideal tablet OS and can't be used on a lap and needs an another $130 to get a Type Cover for a notebook-ish typing experience.
I've seen the Surface RT and even that had you going into the Classic UI for stupid settings so this has to be worse so you'll need a mouse, too, I'd imagine. It all just seems like a huge kludge to me except for a very, very narrow market where it will be the best thing ever.
Edited by SolipsismX - 1/29/13 at 5:07pm