I came to B&B searching for recommendations for a brush to replace the one I had worn out. I decided to see if I could return to a DE and won a Gillette Red Tip in a PIF. I was so excited when it came.
I got terrible results. So much irritation that I looked sunburned all day. So, after a few more attempts, I gave up and returned to my trusted Mach 3. I PIFed the Red Tip to another member.
My failure to master DE shaving bothered me to the point that I bought a Slim on BST, thinking that an adjustable would give me some blade exposure options that the other DE did not. I was determined to give it one last try. Success was measured in terms of reasonably close shave and no irritation. I had done it.
I next got the same razor you have and have settled on the same blade (Astra SP). Lather was never a problem for me, but relearning to shave with a DE was the challenge.
Why do I shave with a DE? Save money (no AD's). Cool traditional equipment. Better results than I got with a cartridge razor.
And, finally, the satisfaction of mastering a new skill.
Sorry for the long post. It just seemed to take on a life of its own.