I am a Harem man my self but I like it to be more like a romance than a ecchi, my top favs. are Clannad(If you haven't seen this do and while your at it play the game and pick your favorite girl for it and don't miss the true end to the anime) School Rumble(Technically not a harem since it only has 2 girls but I think Tenma join soon since she SPOILER: understands Harima's feelings at the end of the Manga and the 3rd season) Campione(I found this when the first episode came out one crunchyroll(Basically means I saw it when it came out in Japan I missed it by like 12 hour since they have sub it and put it on Crunchyroll) and I liked its about a type of person who kills a God and steals there power becoming a Campione(Godslayer) and have the authority of a king as they are the Devil King, its similar to Demon King Daimao and I have to say its very enjoyable its pretty soft core for a harem but that's what I like about it the characters love for the main character is believable unlike most harems out there like Nakaimo which is just a Moeblob fest, but Campione can stimulate me with the amazing make out scenes and of course Godou is the king, so I highly recommended this Light Novel to all my fellow fans of Harem, Fantasy, Romance, School, Comedy, Action, and Ecchi fans to read it at Bakatsuki.com or if you have a android phone download the apparently called Bakareader and download the novel to you phone for free and read it when ever and without wasting battery on Wifi or 3/4 G