The last few years, I have noticed that Citrus from Chile are inferior in taste to those from Australia, California, and Texas. I've tried Minneola Tangelos, tangerines, grapefruits, and every year it seems that the Chilean varieties just do not compare in taste. Now, I realize that this is a tiny sample size (2 grocery stores for about 4 years), but is there any reason for this, or is it just a personal taste preference?