Never had it off with a guy, so I wouldn't know who gives better head but as JoBleau noted, it is all in the dedication that goes into it.
As far as Ladyboys are concerned, I am not so sure that I would stick to my 'girls only' lifestyle but then it is difficult to tell which gender they are at the end of the day. There is one, a Thai Ladyboy if I recall right, Kathoey is her/his name, now I might make an exception there.
Feel free to check him/her out. He/she only has a short penis, maybe that aided my willingness to try.
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