i'm running premiere, after effects, photoshop, etc. daily, so i'd never be able to replace a laptop with a tablet. i use my tablet for pretty much purely entertainment. and i HATED using the "full programs" on the Surface because they're clearly not designed for 1) a smaller screen or 2) touch, which renders them frustrating at best.

the Win8 OS is well thought out for a touchscreen device, but considering a Surface to be a complete laptop replacement is a joke to me.

so then it comes down to apps and Microsoft's never gonna convince a significant number of mobile devs to switch to Windows, and therefore you're buying into an ecosystem that won't survive much longer.