I purchased a apilus unit earlier this year the best decision i have ever made. Clients are able to tolerate longer sessions, and while not painfree clients who have wanted upper lip areas cleared have been able to manage the treatment. where as with the other machines it was very difficult. Also you get a lot less regrowth, keeps clients happy. If you already have a good electrolysis clientele and you would like to specialize in this area i would highly recommend the apilus, it sells itself and word will spread very quickly. So even though it is quite a large out lay it will pay for itself. However expect to take a couple of months to get comfortable using it, i was almost in tears until i got used to using it. PM if you want more info. also have a look at the hairtell website great examples of apilus treatments. eg look at depilacionelectr she posted photos of treatment start to finish, with apilus platituim