Hard to tell, because anime are made according to theme and population target.

You may ever like romance, shônen (young men), shôjo (young lady), seinen (young adult), horror, ecchi and so many other subclasses of anime.
If you like a manga you may try to see its adaptation. But you have to know that most manga adapted in anime suffer from the transition. Many filler (which are most of the time the same stories but with other angles to let you think it is new), cuts from the original story to be able to screen on TV and it is quite rare that a whole manga is adapted till the end. It is the same thing with Light novels.

Anime are made to boost the DvD market and help people discover new series that they will then buy as the original product (LN, manga, eroge and so on).

Does that means that anime are to be avoided? Far from it.
Because, first there are a lot of good adaptations and sometimes better than the original product. Take Shingeki no Kyôjin (Attack on titans). The mangaka is terrible with a pen and has to learn what body proportion means (among other things). The anime helps to see this serie as the character design is quite good.
You may alos discover very good story that otherwise you would never have known. And of course, there are some original stories.

If you wish to watch some ecchi anime, you may want to watch ;
Japanese original title (in kanji) western title

* Cross Ange : Tenshi to Ryū no Rondo (クロスアンジュ 天使と竜の輪舞) CROSS ANGE Rondo of Angel and Dragon
* Masō Gakuen H×H (魔装学園H×H) Hybrid x Heart Magias Academy Ataraxia
* Valkyrie Drive: Mermaid (VALKYRIE DRIVE -MERMAID-) Valkyrie Drive: Mermaid
* IS : Infinite Stratos (インフィニット・ストラトス) IS : Infinite Stratos

So, if you have any theme that you want to explore feel free to ask.

Warning: I wil never ever use wapuro rômanji in my text as it is wrong to use it when writting. I use the official rômanji in order to translate japanese caracters.