Yeah, that's actually pretty good. ^^
Chaos;Head also has some ecchi, as well as Seven Deadly Sins and Fairy Tail, king of the ecchi/shounen genre.
The difference is whether or not it is an ecchi show with other elements or a show with ecchi elements in it. Shows that are littered to the eyeballs with fan-service are usually seen as shameful and trashy but they appeal to a different audience who enjoys that kind of content. Fan-service and ecchi in general is actually a pretty nice comedy break in plenty of non-ecchi shows, it's just an anime thing.