I've got a 2500 Sienna FD with the newer style lip, i had 6lb fireline on it and got a fair few wind knots
I've also got a 2500 Saros F with the same lip, one spool with 10lb Sunline Super PE, the other with 4lb Fins braid. The Sunline for some reason keeps getting wind knots all the time, whereas the Fins has never had one yet.
Although the design would play a part in line maintenance, i think the line itself plays a bigger part.