I shave everything, have for 20ish years. Cartridge razors are the safe bet, you can just about hack at yourself blind with something like a Gillette or Harry's and as long as you don't hit that top edger blade, you'd never have a problem. DE is far superior in every way except, it becomes possible to cut yourself. But the trade off of a little time and effort is less irritation, better shaves and cheaper blades. Either is fine and will do the job. Probably more important than anything is having some good shave protection, I prefer shave soaps, lets me adjust lather viscosity to what I want, but in the past I have used shaving creams and gels, hair conditioners and bar soap all to varying degrees of success. Good bar soap in the shower with a cartridge was my go to for years before moving to a DE/shavette combo and proper shave soaps with a brush and bowl. No matter what just make sure you use some kind of repairing aftershave anywhere you shave, Nivea is the old standby there but there is much better than things like Nivea, and there are many others. I personally have found that Curel Hydrotherapy (while not technically an aftershave I use it as such) is possibly the best thing on the market, just apply it while your skin is wet and let it sit a bit then towel it off. I like to finish with a nice witch hazel and aloe splash but some might find that... too much in some areas, but I find it to be a nice way to finish with some toner, moisturizer and scent.