A while back I purchased the Angelus oxblood polish for a pair of English dr martens 1460 boots, the problem with the oxblood Docs is they get  a little lighter as they age and the oxblood polish was giving them a slight pinkish tone. After a bit of research it was suggested that the Cordova would add a little more depth. I was a little nervous applying it the first time but they came out great! Still oxblood but a little deeper. I prefer angelus over kiwi for all my Docs as it feels more old school when working with it and shines really easily.