I don't think my Slim will ever be my favorite shaving implement, but it does have its moments. On my skin, the Slim seems to be more blade sensitive than some of my other razors. I haven't sorted out exactly all the blades that are better or worse, but I do know that a new Personna Super (the so-called Lab Blue) blade is NOT the blade for me in this razor. I had a disastrous shave with a second-use lab blue and the razor set to a mild 3.
Yet I had a great shave with the Slim and a used Personna red label blade, the platinum-chrome blade, with the razor set to a more moderate 5.
The Slim, like any of my long-term relationships, obviously has its ups and downs.
If you are a regular visitor at the Sharpologist.com blog, you may have noticed that I had an article published there once again about a week ago. That one was on the subject of shaving as performance art. (To easily find any of my articles, simply search the site using my last name, Hansford, as the key word.)
I also have another article on deck to be published in the near future on the challenges and curse of modern cartridge-style, multi-bladed razor designs. You might keep an eye out for it.
Two of my regular razors remain the Merkur open-comb 15C and the Rimei RM2003 (a.k.a. on Amazon as the "Traditional Double Edge Razor"), both of which are three-piece razor designs. In terms of shaving character, I think of them as bookends around the later (after WWII) Gillette Tech razors. The 15C is slightly more mild in shave character than the Tech, and the RM2003 slightly more aggressive though skin friendly. Depending on the blade, the condition of my skin, and the closeness of shave that I seek, these three razors are the ones that I tend to use most frequently.