Any suggestions on which tank I should buy

I know I am behind times but I am just now able to buy a Protank 2 but when I went to SweetVapes to order one I saw the new Kager Unitank. This tank can be filled at the top too. It will be awhile before I have the money to buy another tank so I was wondering what would be your suggestions. Protank 2 or UniTank?

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