i have recently tried the carmelina brand tomatoes and liked them very much. they are sweet and do not contain citric acid. the ones i tried were the whole tomatoes in puree. i would still say my favorite so far are the LaValle d.o.p.s. they just seemed to be a cut above the others i have tried. i need to revisit all the tomatoes i have tried and see which i like best, since it is so hard to recall the subtle differences from memory. i also like the Nina brand you can get at costco here in the mega-cans. great value at about $2.50!
back to the carmelina tomatoes. i think they are very good, but i noticed a little bit higher priced than the lavalles (at least where i can find them) and not necessarily better than a good ol' can of 6in1's. to me the greatest selling point is the lack of citric acid. i hate the stuff.
Give em a try,