Palestine is better pronounced. It becomes Falastin and very much compatible with the Arabic language, unlike Bebsi.Yes, I know - just like Arabs cannot pronounce Greek name "Palestina".
Just like Jabal Tarek is now Gibraltar.Indeed - Palestina becomes Falastin and Pepsi becomes Bebsi.
There is no letter "Phi" in Greek alphabet.Ya exactly this is why the Phi letter is used but you were assuming that the original name of Philistine was Pilistine!
Either way this is not our topic..