Use chainfire's CF Autoroot, pay attention to your model version, eg: N9005
Galaxy Tab Pro 8.4 - better than Tab S
Note 3 Stock ROOTED TW 4.4.2 (XXUEND5) -returned for faulty screen, N900T - returned for faulty screen and buzzing speaker.
Note 2 - Sold
S4 - FNB8 Stock rooted
S3 - TW 4.3 Stock rooted (Still awesome phone)