Rant ahead
My situation is very similar to you , I flashed 820 and have Storage check/Data sense and also have an iPad ( lot of photos , so opted for 3rd gen retina and love apps/games so 64gb model)
I don't see Windows 8 eco system like "Apple" , for example , if apple releases a new device , within two months time frame , all apps get updated and iOS issues also get fixed very fast but on other hand I see completely different things in Windows 8 platform.When i first had 3rd gen iPad back in April 2012 (as u know , it newly came out , released in March) , Half apps were already made for retina and by June , every app i used got updated for retina display.
Its been 6 months since launch of Windows 8 and don't see even one serious issue getting fixed or apps getting into platform fast.
Temple run was promised in October as coming "soon" and it came after like 3-4 months , same with other apps as well.
Windows platform is unique and great but MS support is bad , very very bad.Another thing I noticed is how slow apps get updated.For example , Cut the rope already has new levels for android/iOS but WP version is not updated after december.
I think WP takes another 2-3 years to get into track , its half baked OS still.
Well some people may assume I am ****** or troll but I actually "used" Windows 8 platform from first.I got Windows 8 installed on my PC on the first day of official release and I had followed Lumia launch right from september event.
So after much experience , I came to this conclusion.