I debating on getting the TDK VeloCd 52/24/48 or the TDK VeloCd 48/16/48. I noticed the the 52/24/48 has some new technology called Constant Angular Velocity (CAV) burning. What is CAV? Is it really a benefit? The 52 burner is one sale at Best Buy for 89.99 with a $20 rebat making it about $70. The 48 is one sale at Frys for 79.99 with a $40 rebate which makes it about $40. Is the 52x and CAV really worth $30 more? Thanks in advance for your opinions!!!