First Flash Help

[[Death]]

hey guys, looking to get my 1st flash, on a canon 70d, which would you go for, the YongNuo YN-568EX II or YONGNUO YN-600EX-RT, the 600 is only slightly more, is it worth going for the extra?

many thanks!

(noob when it comes to flash sorry!)

 

[[Death]]

thank you