Native Instruments "Transient Master" is simple and satisfying for me. I've actually used it in non-EDM applications too. I recorded some voice over in an apartment next to a busy street and TM worked wonders to reduce unwanted noise on the tails in a natural way. Probably could be useful for rap or Deep House VO recording...$99 but there is a demo version. Or it's included in KOMPLETE which is a worthwhile instrument plugin rack to have anyway... Admittedly pricy. I went without until I started getting payed for my work.
