First, OneNote. It is amazing what the program can do with that handwriting.
Second, Windows. For everything that doesnt have a ribbon interface and relies on context menus you better go with the pen because it is more accurate and you can "hover" with the cursor, while using context menus with the finger is always a shot in the dark.
Third, FreshPaint app. Works very well.
Sorry to disappoint you, but Photoshop does work, but the controls in Photoshop are small and you always have to switch tools, and overall Photoshop just isnt made for tablets. So better not build on using ?Photoshop with it. But you can connect a bigger monitor and dublicate the screen and then use it as a Wacom tablet, that works pretty well.