Best camera

[Frankysreef]

Hi all I need to buy a new camera.

I want to take close up shots of corals in my tank + take close up shots of jewelry for my store.

I also want to be able to get large prints 11x15 for I am going to italy in 2 weeks.

I found these guys at costco.. will they work?
http://www.costco.com/Browse/Produc...v-_-Top_search&Nr=P_CatalogName:BC&Ns=P_Price|1||P_SignDesc1&N=0&whse=BC&Dx=mode+matchallpartial&Ntk=All&Dr=P_CatalogName:BC&Ne=4000000&D=camera&Ntt=camera&No=10&Ntx=mode+matchallpartial&Nty=1&topnav=&s=1
http://www.costco.com/Browse/Produc...v-_-Top_search&Nr=P_CatalogName:BC&Ns=P_Price|1||P_SignDesc1&N=0&whse=BC&Dx=mode+matchallpartial&Ntk=All&Dr=P_CatalogName:BC&Ne=4000000&D=camera&Ntt=camera&No=13&Ntx=mode+matchallpartial&Nty=1&topnav=&s=1

Thanks for your help

Frank