Prior to 1989, most store-bought tomato sauce was very similar, because market research at the big food processing companies was geared toward finding the ideal singular version of any given food product. The proliferation of tomato sauce varieties on the store shelves today
is a direct result of the huge market share gain that Prego enjoyed in the early 1990s as a result of ground-breaking consumer research done by Howard Moskovitz for Prego, which discovered that tomato sauce preferences fell into three broad categories: Plain, spicy and extra-chunky.  Optimizing different varieties for these three palate preferences made a huge difference. 

I'm an extra-chunky kind of guy.  And of the extra-chunky sauces, I really like Bertoli Premium.  It's sweetened with concentrated carrot juice, not sugar or corn syrup, comes in (for me) a convenient 13.5oz microwaveable pouch, and is on sale often (like now!) at Amazon.com: 6 pouches for $12.35 when you sign up for "Subscribe & Save" (easily canceled) and use coupon code MY9UNILE.