I haven't noticed any difference, although I don't buy them frequently enough to make good comparisons.
I've considered switching to frozen concentrate for a lower-cost approach. I think it's likely to be promptly frozen after harvest, and may have lower pesticide levels due to smaller-scale production: http://www.inspection.gc.ca/food/chemical-residues-microbiol...
I've considered switching to frozen concentrate for a lower-cost approach. I think it's likely to be promptly frozen after harvest, and may have lower pesticide levels due to smaller-scale production: http://www.inspection.gc.ca/food/chemical-residues-microbiol...