I re-read these mangas every week because i can't wait for the next update. Its all adventure - games based genres so idk if you will like it but I love all of them.
http://www.mangago.me/read-manga/to_aru_ossan_no_vrmmo_katsudouki/
http://www.mangago.me/read-manga/death_march_kara_hajimaru_isekai_kyousoukyoku/
http://www.mangago.me/read-manga/knights_magic/
http://www.mangago.me/read-manga/dungeon_seeker/
http://www.mangago.me/read-manga/moon_led_journey_across_another_world/
http://www.mangago.me/read-manga/tondemo_skill_de_isekai_hourou_meshi/
I search through my faves list too, the veterans are kokoro connect, sex pistol, nar kiss, madarame hiro's, ogawa chise's lighter ones., aikata etc, mujihi no otoko etc, gekkan shoujo nozaki kun, and im always itching to read jealous/possessive semes and head over heels semes, thats*cough*my*cough*t-thing.
I found myself rereading Natsume Isaku's works a lot this year. Lat year I reread Junjou Romantica and Sekaiichi Hatsukoi a lot. I think I gravitate toward series with tsundere-ish uke, with more than one sex scenes and cheesy but light plot.
Whats A Manga you've Re-read every couple of months?
I usually read my favs every 2-3 months.
Kizuna, Love mode, Honta Yajuu, And Fake. (some reason i dont get tired of them)