In a vs comparison we pit the Samsung Galaxy Tab S 8.4 against the new Sony Xperia Z3 Tablet Comp - slim vs slimmer, AMOLED vs IPS, Exynoss vs Qualcomm, land-loving vs waterproof. With Galaxy Gifts on the Tab S 8.4 and PS4 remote play, both these tabs have some brilliant value adds, but how do they compare in the less obvious departments like connectivity and design?