How big is TOO big?

[bmac221]

Hello Fellow hammocks campers,
I am in the market for a new or used Tarp and was wondering what size to get? I think 8 x 10 is the normal size and that would work for me . Do I want to go bigger? Not really worried about the weight but more of the price. I am watching 2 on Ebay both are Equinox and include shipping : 8x10 for 50$ or 10x12 for 60$

Thanks for you time
- Brian