Recs.
Updated
SpecsUpdate
Pros
Pro Multitasking support
While not native to Andoid (yet - it's coming with Android N which is expected this fall), the Tab S2 supports for limited multitasking. You are limited to about 20 apps but Chrome, YouTube, and other applications are supported. Multitasking performance suffers a bit, but at least the option is there.
Pro Stunning display
The high resolution 2048x1536 4:3 aspect ratio Amoled display provides super saturated colors that pop out of the screen, as well as true blacks (Amoled technology allows individual pixels to be turned off, emitting no light unlike LCD pixels which require a constant backlight). Amoled displays can also be more power efficient when displaying true black colors.
Pro Great performance
The Tab S2 has Samsung's own Exynos 5433 processor, which has 2 quad core processors inside (one high power, one low power). Only one processor set runs at once, however when performance isn't needed the low power set will kick in instead of the high power set saving battery.
In GeekBench 3, the Tab S2 scored 4175, which is shy of the iPad Air 2's 4547 score but solidifies it's position ahead of the Dell Venue 10 7000 (2900) and Microsoft Surface 3 (3531).
Cons
Con Lack of Android tablet apps
While Android has the largest app store, it lacks tablet-specific apps. Upscaled phone apps will still work, however not all of them rotate into landscape mode, and very few of them will make the most of the larger screens that tablets provide.