I think there isnt need to waist time with Fugitive Plan B, its light and funny but if you want see best role what Rain have ever done then watch:
http://mydramalist.com/korean-drama/152/a-love-to-kill
I see you liked City Hunter then i think you like
http://mydramalist.com/korean-drama/291/time-between-dog-and-wolf what has better script (without plotholes) and good actors teamwork, not to mention main male lead is Lee Jun Ki, who is superb actor and eyecandy.
Or if you want something intence and with twisted romance and fate then try
http://mydramalist.com/korean-drama/386/one-million-stars-falling-from-the-sky It is amazing how main male actor manages play with you, superb rolemaking....sad ending.
If you dont like intence and sad you can try
http://mydramalist.com/korean-drama/157/hero from same actor. It has only tiny hint of romance but is kinda funny and light with some serious undertones. Actors teamwork is great, script smooth. Its not miracle that this drama was in Japan amazingly popular and still is.
There is alot more what i should recommend but try first watch thous.