Like many here I do not only know Ecchi I also am a huge fan of it - as long as we are talking about pictures.
Ecchi-pics usually are drawn more vivid and colorfull compared to their H-companions. They furthermore don't urge your 8 year old brothers to ask your parents why you are viewing naked people on your Laptop - a huge plus
BUT - I have to admit I came to despise ecchi-anime. The drawings show the same positive points, but... that's it. The story is simple if present, the comedy aspects usually are as boring as the protagonists and the protagonists usually are... flat. Kinda sad, since an overall improvement of characters and story would make Ecchi pretty much the best genre to find - at least as far as I am concerned.