I am using Philips Satinelle Corded Epilator EVERYWHERE on the body. I know it is a kinda hardcore, but works for me, and the smoothness down there is your reward. I had problem with ingrowns, but the Tend Skin Ingrown Hair Solution (Amazon) is working for me brilliant.
Last year I applied to myself a series of masochist sessions to remove all hair, and since then I need to sacrifice max 1 hour weekly to keep up with result.
Face: eyebrows and moustache + chin - waxing (done by my friend) plus Inhibitif to slow down re-growth. It worked so well so far, that will consider the serum for body too. Available in Boots, if not in stock in your local one, might be ordered online or via local shop.