Thanks to everyone for the replies.
progress4m: Good to know, I do prefer the appearance of a wider stance so that may be a drawback to a rounded flare. However, something about the squared ones is just really unappealing to my eye. I am not sure if it's the contrast of the square fender with the round wheel, or just the way it looks compared to the other body lines. I just do not care for it at all. I'm generally not too particular about things like that but for whatever reason, my eyes go right there any time I look at a picture of a rig with that style of flare.
I am currently in the market for a 4th gen, but I just don't think I can get past my personal distaste for the squared fenders. Too bad, because I think 2003-2005 might be the sweet spot for value. If I just can't live with the squared fenders, do I have to look at least 2006 or is there any reasonable method to convert a 2003-2005 to something more in line with my taste?