Text looks sharp and nice in AE but it looks bad (jagged and not sharp) in Premiere.
My process is:
-File > Adobe Dynamic Link
-This creates a comp with the same settings as Premiere Project
[720x480 NTSC DV (.9)]
-I create my text elements, graphics, animations, etc.
-I go back to Premiere and the text element or graphic looks jagged. This is even BEFORE I render the clips or output through Adobe Media Encoder.