Food52.com did a taste test (among their staff) of 8 mayo's (or mayo like - they included Miracle Whip). Here are the results:
8. Kraft
7. Miracle Whip
6. Sir Kensington's
5. Whole Foods 365
4. Trader Joe's
3. Kewpie
2. Hellman's
1. Duke's
8. Kraft
7. Miracle Whip
6. Sir Kensington's
5. Whole Foods 365
4. Trader Joe's
3. Kewpie
2. Hellman's
1. Duke's