Aioli
Mayonnaise all day long. I can eat the stuff straight our of the jar. Addicted to the stuff.
Salad Cream is far too sweet, but does have it's uses.
As to which brand, the best is Co-Op's own brand. A great eggy flavour.
I prefer salad cream as it's tangier, never really found it sweet tbh. Not tried coop's own brand but will give it a go
I like them both equally but have been excluded from voting.