There are three different types of transmissions over the radio. Each of them has its benefits and limitations.

Precise and Slow

"Alpha Actual to Alpha 1-1, OVER" "Alpha 1-1 come in, OVER" "Alpha Actual, we cleared the Town and now await further instructions, OVER" "Alpha 1-1, I'd say you stay where you are and cover the hills bearing 2-7-2, OVER" "Alpha Actual, copy that we will stay and cover the hills bearing 2-7-2, OUT"

The first variant is the longest of the three. You can use it in situation in which you have enough time to wait for each confirmation and you are not in battle.
That are five transmissions for a very simple conversation, but you can be sure that Alpha 1-1 knows what they are supposed to do and Alpha Actual knows that as well.

Accurate and quick

"Alpha Actual to Alpha 1-1, we cleared the Town and now await further instructions, OVER" "Alpha 1-1, I'd say you stay where you are and cover the hills bearing 2-7-2, OVER" "Alpha Actual, WILCO, OUT"

This type of transmission saves some time and some boring responses. If you use such a transmission you have to be sure that your receiver is able to receive your message.
In my opinion this type is the best way for normal radio conversations!

Sloppy and fast

In certain situations you really need somebody to know about a problem quickly. In these situations its good to spare on some steps and just come out with information.

"Eagle 2-3 to Alpha 1-1, we need immediate CAS on 490273. The Target is a Factory, OVER" "Alpha 1-1, CAS on 490273. WILCO, OUT"

This however can be troublesome if the receiver does not understand the order is. In that case its better to just ask for the sender to repeat his transmission:

"Alpha Actual, repeat last, over"