Playing the turks late period can be really fun.
You have to be extremely frugal and quick thinking since you only have 1 province. And they have a hoard of unique units that are pretty decent, ottoman infantry are good starters but they can break pretty quickly but the added bows make them excellent.

My only problem with the Turks is that you have to conquer the Byzantines much sadness.
I hate conquering my favorite faction but its inevitable.
But personally i love the byzanites my favorite faction, with all the benefits, troops cant be stolen into crusades and they dont often get picked on for crusades either!