Flame thrower. Only need to use it once and you never have to worry about needing to shave again!
I just use whatever cheap razors I can find in as big of a bulk bag as they have on the shelf. I have tried dollar store razors and expensive 5,000,000,000,000 blade ones and I feel like I get the same shave. The only difference I found is some times the more expensive ones you could use a few more times before throwing them out, but I have had cheap ones last just as long too so who knows.