The only good gender benders I've read are "Kashimashi: Girl Meets Girl"
For real.
Got suckered in by "Kanojo ni Naru Hi - Another" (sites tagging that as yuri can jump off a cliff, by the way). It even HAS A LESBIAN WHO USED TO BE A GUY. The protag even brings her up when talking to a therapist after gender-swapping, and the therapist goes "Oh, she's just different and weird. YOU are going to want to hop on some dick." Protag fucking ends up falling in love with the guy she hated the most pre-swap!
Though "Tensei Kyuuketsuki-san wa Ohirune ga Shitai" is coming along, and the protag shows no interest in guys, along with every other girl falling for her.