Well, seeing your flag, you're from a Tier 1 country -- so having a Premium will be good for you -- a good opportunity -- there are some ads that are specifically targeted for Premium users ( which are determined by the advertisers ) so you can be certain that you'll be able to get a good number of ads
Notwithstanding the chances on the ClixGrid ( having 50 chances to play with gets daunting at times )
And last, if by any chance you do plan to -- prepare one of your social networking accounts / blogs to carry your affiliate link, and you'd get a referral ( if he / she clicks on your link ) then that means a good opportunity to earn as well
It's all up to you -- it's your call, your means, your decision
( Offhand: I've seen Standard members doing well on the Tasks, and have earned a good value just doing those instead Guess it just goes down to the determination of the user )