Great soap and sharper blades make a real difference. Shaved with St. Charles Shave Soap obtained from The Second Passaround Box. Also used a Gillette 7:00 Yellow blade (in my Gillette Slim) for the first time. Close shave with virtually no irritation.
Pre shave oil gets a LOT of bad press, which I used to emphathize with until I used it correctly.
A foaming cleanser, followed by shaving oil applied before/during a hot shower (allowing enough time to sink in the skin) is a wonderful prep. I top that with a pre lather that sits on my face while I strop my razor.
Applied underneath a face lathering is actually terrible. The lather is good but the brush suffers.
I learned that if I really go for a BBS on my neck during a slow, non-rushed weekend shave, I will still look like I took a random orbital sander to it.
Derby blades (though they have a loose fit in most of my tools, had to use a TTO today to compensate) not as terrible as I thought (though 1 shave in)... can it last all the way to a 3rd day? Could be my short trip travel combo...
That a cheap cart (Personna Caliber 3) works better than a Fusion for me. Not willing to give up DEs ever but now I have a great travel razor that won't break the bank.
There is a fine line between a lather that is too dry and one that is just right. Even just one or two drops of water from the fingertips can get you into that sweet spot. It takes trial and error to successfully find this balance every time.