Im no expert but i have been with a few post op girls - First P4P was 2014 with Samantha Del Valle (TER ID: 9604) but i had been with one in Thailand (Koh Pa Ngan) 2010...
Full moon party i was drunk as shit and saw this hot tall girl dancing... i scored had a hot night went into every orifice many many times over... next day she was gone and my buddies told me she was a he.. i said no she had all holes and i went in them.. more an more i thought about it and had to look for her, i found her on the beach.. She was honest told me that she told me she was a Kathoey the night before and i said i didnt care if she was a bus?? What? yep...
I spent 2 more days with her, she was funny, sexy, tight and uninhibited aggressive in bed... she was insatiable and we just enjoyed our time.. still can remember her face just beautiful almond eyes... not sure what became of her..
So back to your question after reminiscing.. I am pretty much a TOP only but i do find Non-CIS girls attractive and i think the nature of the passion for me is what makes it fund to be a post-op, Samantha is the same she was aggressive in bed, gave one of the best BJ and would swallow and then would be up for going again.. and she was tight and felt good..
I have never DATY on a post op.. not sure how that works or is for them, I had one girl (Columbian) that would Climax and said she was still very sensitive down there like the area bottom part of the cock that's like V shape I guess and she said she also got wet, and i could feel it... not sure how she did that but we did use lube to start it up..
So for me, i like post-op girls but then i again i like cis girls an also pre-op girls.. in all im just a hedonist.. ha ha..
The biggest problem is finding post op girls there are not many TS girls let alone many Post OP TS girls... but if you find a nice one sharing is caring.. ha ha.