I've been told this racket has more power than the old 300G due to this technology. Is that true? I'm talking about the NON-tour version, as this is the best one to compare since they both have 16 X 19 string patterns and are about the same static weight (10.9 oz.)--I'm not interested in the Tour version--too heavy. Is it just a little, or significantly more powered?? What would be the best tension to string the 4D 300 at (17 guage) for maximum power?? Also, is the new 4D 300 more powerful than the last model--the 300 Aerogel??