i have been looking around for a new case. the case and power supply that i'm using right now are too loud. i've heard that the Antec Sonata is a great quiet case but it has airflow problems. I've also heard good things about the Antec SLK3700BQE. which case is better? i havent overclocked my system yet and i dont plan on it anytime soon but can the power supplies included with these 2 cases provide enough power for the system in my sig? thanks.