Just had a wee gander and here's some general thoughts from the St.Mirren's fans forum site (Black and White Army)on Higdon...
"Higdon is as good as we can expect, however, he's a lower Championship league side at best...his true level, down south: League 1"
"I would like him to stay, but he is not a great loss if he goes, he's a lazy bastard most of the time and thinks he is better than what he is, he is easily replacable."
"If he went to Hearts they would have the fatest and slowest strike force"
"I think Higdon has been one of the most frustrating players to play for Saints in recent years. He obviously has the ability but at times appeared to lack motivation thus appearing very lazy."
"He scored 15 goals last season, including penalties which is fair enough, the season before he scored 6 goals! Higdon will never score that many goals regularly every season so is easily replacable."
etc etc etc...