I use Star San exclusively. When I first started I used acidified bleach, but after 5 or 6 batches I discovered Star San, and never looked back. It's extremely inexpensive mixed to specs, I only make a gallon at a time. Since it's basically a contact sanitizer, there's little waiting, and I can just spray it on where appropriate. It will last through at least 4 brewing operations, and in between uses I just store it in a glass jug, and use pH paper to test it before each use. I see no reason to look elsewhere for a sanitizer.
“Malt does more than Milton can / To justify God’s ways to man”
-A. E. Housman (1859–1936). A Shropshire Lad , 1896.