My personal preference is pilot2ATC I have both, I like to start me descent then ATC will allocate a Star and runway, it may of changed from where you departed. Also sometimes gives you accurate vectors to final, speed restrictions and altitude from navigraoh charts. PF3 is good but it requires a lot of input, with SIDS and STARS…Each have pros an Cons…Pilot 2ATC can become v expensive i Used cerevoice and text aloud voices, which is very expensive.