What I personally prefer
MadeUp Radar, G-ABCD requesting xxx service.
why ?
-if I don't have your details, I'll have to catch your callsign and write it on a strip (if I am on the phone, the headset will have the phone line in one ear and the RT on the other one, so it's easy to mishear things)
-if I know what type of service you're after I can already think ahead in terms of separation (if required). This is more relevant if IFR.
-when you tuni into a frequency, you don't have a good awareness of how busy it is, or what's going on, as you haven't heard what's going on yet. There could be more important things to do. If you hog the frequency with a long call, someone else could go thru the ILS while listening to your trip details.
So, yes keep it short and simple, with a request of the service.
If planning on a zone transit, or requesting a service from a busy unit, it is always recommendable to phone your details to the ATC unit before departure.
That way, the assistant (for as long as we have them !!!) will have your details prepared and that will improve your chances of a slick and seamless response !!!
