Hello. I have a group of S4's and group of old strands (i've heard them referred to as the 2331s?), and I will be using both for an upcoming show. Now, I know that a S4 will outshoot one of these any day of the week. However, I am wondering if anybody can tell me what would happen if the S4's had 120v 575 long life lamps? The last time I used them, they seemed incredibly dim, and I could swear that the Strands were brighter. Can anybody shed some light on this for me. Thank you!