A Professional Solution
Reachy and Fgk42-
My personal preferences for hair removal are irrelevent. However, with that said, I will offer you my professional opinion as an Aesthetician.
3 or 5 blades isn't really as important as you think. The key lies in preparation. Cleanse and gently exfoliate your skin first, then use a quality silicone based shaving lubricant with a fresh razor. Afterwards, use a glycolic based soother to reduce irritation and prevent ingrown hairs (Tend Skin is one of the best on the market).
You'll find with these steps you'll achieve a clean, professional shave.
Elyssez