Costco great for tvs and the returns policy is better than any shop on the planet.
If you have a problem they will refund your money in cash if paid cash no questions asked, dont need box just pick it up pop it in your boot take it to shop wheeled in on a trolley then bingo refund not an exchange they are brilliant.
They stock all branded names such as sony,panasonic,toshiba etc at competitive prices.
They all come with costco standard 5 yr warranty but if you see one you like buy it because they change there lines regulary and the same one might not be their if you go a week later.
Would of got my sony lcd their but they didnt stock my model no and im fussy.
You wont go far wrong buying from costco if they have what you want
Good Luck Daz