In addition to the t-girl of your dreams being a beautiful passable woman, do you put great importance that your t-girl can not only maintain an erection for 10 or 15 minutes or longer, but she can also give you a nice cum shot?  Do you find this to be the most idealistic t-girl experience?  Is it less than perfect if a t-girl can't keep it up and cum for you?

Yes to all of the above. I do prefer a big,hard,beautiful,gushing,t-girl. Although, I have had some truly wonderful times with girls who were up front with me about what they can, and cannot do. Any private responses from you girls are aok with me!

Although I have limited experience, IMHO, if a TS doesn't have a hard cock and can cum there is no need to see a TS.  I would rather have a real woman and enjoy natural tits, DATY and vaginal penetration.

To me ...it is a MUST, i think a girl with a stiff cock and that is able to shoot a huge load...is one the most erotic thing in the world.
Unfortunately, it is not easy to find.

i guess i must be in the minority on this one, i am really only there for the girl. I guess a stiff hard cock shooting cum everywhere is important to some people but not me. Sure i enjoy watching a girl get excited and hard during our session, but if it didn't happen i would not care in the slightest. I am more into the illusion, i love the fact when we get naked she has a little something extra betwee her legs. and personally i enjoy sucking on a nice soft cock as much as a hard one. kind of like REALLY big pussy lips
I know if your reason you're with a TS is to be topped getting her hard is a must, butt some of us just enjoy being with the girl herself.
I've had it both ways and its all good. Here are two quick examples, i was with a TS who had very mixed reviews, beautiful but small does not get hard & always on the phone. Our session started to go that way but when she was on the phone i decided to suck that cock deep into my throat. Surprise Surprise  when she got really hard she had a monster!  Her phone conversation quickly turned to "oh...um,...okkkkkk, SHIT!" Next thing i know she is squirming all over the bed  and i am trying my best to keep all that monster deep down my throat as she spasms and cums HUGE.
session #2 different girl, we are DFK kissing grinding our hot sweaty bodies together and it is so fucking sexy i just can't stop, as she gets hard she slips her cock underneath me and slowly guides it into my ass from the front, it feels good but i pulll her out. We do this a few more times until i finally am able to explain to her i just want to feel her cock against mine as i cum. I just loved the feeling of her next to me i could care less if she was hard or not.
They were both great experiences and both totally different.
And for me the sexiest thing on this planet is watching a beautiful woman strip down naked with her back to you then turn around and walk across the room toward you with her lovely cock swinging back & forth, SEXY!

I agree with you on this.  I look at any hooking up experience as one in which objectively I am getting my rocks off.  I can never recall calling a t-girl for a second date if she had demonstrable cock problems from a previous session.  It kills the fantasy for me.  The dream is of a girl who went through life as a boy and later in life became this slender and beautiful woman who has some thing different about her that all other women do not have.  That difference is her hard cock that cums.

In the epitome of perfection, this slender and pretty t-girl possesses both feminine submissive womanly characteristics in addition to this abberation of nature in which a penis is present on her lovely body.

Taking this unique encounter to it's vivid extreme is the transsexual woman in all of her feminine beauty, taking on the physically dominant role of piercing the masculine body of the male with her hardness, despite still being a feminine submissive type woman. This IMO is a beautifully perverted exchange of physical love.

Idealistically, she would do this at a fee structure that is comparable to other GG or TS women on the market. Because from a John's persepective, getting your rocks off is getting your rocks off.

As CK mentions, if the chick does not have a hard dick, we might as get the real deal (a GG) for a common price.  No sense paying a premium for or hooking up with a TS who can't deliver the whole gig.

Bringing my TS lover to orgasm is one of the most satisfying & erotic experiences I could ever ask for.  Hearing her moan with pleasure as she shoots her cum makes it worth the extra price.  Without a doubt.