I recently switched to the Harrow Spark after several years using the Black Knight Magnum Corona. The primary difference between these racquets is the lightness of the Spark. The Corona is, in my opinion, a fairly standard racquet in terms of weight and balance. The head is almost completely circular while the Spark is more oblong.
Harrow Spark Review
Jan 17, 2013 11:53:23 PM / by Mike McCue posted in Jonathon Power, Harrow, equipment, Product Announcement, Review, spark, squash racquet