i cant really put it in listof what was best cause i enjoyed them all. also im confused as to whether you just want me to list romance one or just my top list, ill have a go anyway!
Vampire knight- i would be surprised if you havnt seen this. it never gets old, ts full of that dark romance between the characters, the animation has good style, and the story line has depth rather than all jut floppy romance, which is always a plus! this is a must see
Death note- this kind of ha that spark of romance between misa and light, even though is is always just using her and other people to achieve his ultimate aim. Again the storyline is intelligent and intriging to watch as it unfolds.
Code geass- i have to admitt first time i watched this i think i atched the fist episode then stopped, later i went back to it and watched the whole thing, and am soo glad! theres so much going on that you can never really predict what is going to happen exactly, which i like about an anime. the final ending was also really good.
eden of the east- i watched this not too long ago. the storyline is original and the series is only 12 episodes, which in a way is good cause it means the series is compact and to the point, so i dont get bored by any random fillers, it will leave you wanting more!
ouran high school host club- who cant love this! well i dont know anyone. its a lighthearted anime, where none of the characters piss you off, and each one is individual. and the singual romance developments between haruh and the rest of the guys is interesting and funny. You will be laughing your way through this one :)
Haruhi suzamiya- i ws a bit reluctant to put this one on, but overall i really enjoyed watching it, and i love the relationhip between the characters and their different personalities, and i think its a must watch!
naruto shippuden- although i liked naruto to begin with, in the end it just got a bit boring. but shippuden on the other hand actually has a really good storyline and has become quite serious, as the characters has grown older and take on more responsibility, i enjoy the release of this every week. and the animation of the fights are amazing
bleach- i think i like this partly because i skip ALL of the fillers, cause thats when it gets boring. But i find the story really interesting. and again, the fight scenes are really well animated eg- ichigo and aizen, or ulqiuorra.
fairytail- again, cant really say much, but i just lovethis anime and its characters. even the fillers are fun to watch, with a bit of comical light heartedness.
some other romance ones i enjoyed were bokura ga ita, skip beat, gravitation, hakuouki shinsengumi kitan, hatenko yugi and many more (uta no prince sama, starts next week!)
others i enjoy in general would be dance in the vampire bund, beelze bub, full metal alchemist/full metal panic, K-ON, steins;gate