Which is better? Purchasing un-referred members or join the membership at Buxto?

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I am considering and pondering if I should purchase unreferred members or join the membership at Buxto. This site is quite good in my opinion but the fees are substantial. What do you guys think? I hope to get a little feedback to help me in my decision. For those who do not know about Buxto, welcome to join at: http://bux.to/?r=bbhamster