For sensitive skin: first pass with electric
Intro: I've got very sensitive skin with fine hair. Started DE wet shaving 6 months ago. Until recently, my standard shave had a basic 3-pass format. But I've never been able to make a 3-pass shave two days in a row with Merkur blades or even once with Feather blades. Well, I CAN, but inevitably my sensitive skin gets red and irritated. My lathering is good, prep is good, post-shave is good. Very confident I am not making major mistakes in those areas anymore. Technique is always getting better of course.
Discovery: My previous shave routine was quite normal - 3 passes, WTG/XTG/XTG+ATG (third pass ATG in less sensitive areas that can handle it, XTG in the opposite diagonal direction on more sensitive areas). Last month, I replaced the first 2 passes with a pass of my electric. I do this before my shower, and afterwards I only make one pass with my DE, just in the areas where I can actually still feel some stubble after the shower. This has allowed me to get an outstanding shave daily and never have to deal with redness or irritation anymore.
Be aware that I put a lot of care and experimentation (years ago) into finding an electric that would give me a good shave and never leave me with nicks or irritation. I landed on the Panasonic ES4289 and it's an absolute dream for me as far as electrics go. I use it dry because it simply can't slide across my skin under any kind of wet conditions at all. The best thing about it is the texture of the foil screen, which is unique among electrics if you inspect it closely, and is the only one that does such a good job for me.
Additional note (any comments?): The skin on my upper lip feels completely different when the blade is moved across it than the skin on my chin and neck. I can't even come close to ATG on my upper lip without shredding it brutally. In that area, the electric is by far the best shave I'm capable of getting, as it leaves me tremendously smooth. Even if I stretch my top lip down over my teeth and push my fingertips firmly ATG, I can BARELY detect any stubble after a pass with my electric. I'm pretty sure the only reason I'd have to try and get a better (or equivalent) shave there with any other method would be purely for the challenge. I do a little bit of cleanup right under my nose with the DE because the electric just doesn't reach that area, and it works out great.
If you're wondering why I haven't mentioned my cheeks at all...I don't grow any hair on them (I'm 26). I literally only have hair in the goatee area and slightly lower on my neck. Shrug.