Another factor is how fresh the product is. Even the best imported brands won't taste very good if they have sat on the shelf so long that they now taste like the tin can they were packed in.
Unless you live in an area where such product has a high shelf turnover you'd probably be better off buying a lower priced, domestic brand.
Turn the cans over and read the expiry date. Look at the cans themselves. Are the labels dirty? Do the cans have lots of dust on them? If so, don't buy them.
Personally, I've been perfectly happy with USA brands. The Great Value brand pear tomatoes with basil in puree have worked very well for me.
Cook's Illustrated once did one of their unabashed blind taste tests on various brands of domestic and imported tomatoes. The winner? Muir Glen. They also did a blind taste test of various brands of pasta. The winner? Ronzoni, I believe.