I played one of these over a year ago and due to all the positive press on this forum I find myself GASSING for one. My band plays mainly gritty, dirty blues(think ZZ Top). We only have 2-3 clean songs but I still need decent clean headroom for some of the smaller clubs we play. We only get mic'd at the larger venues around here. My '59 Bassman has plenty of juice and it will remain my go to amp for gigs but I have been searching for a nice backup for quite a while. Thanks to Uncle Sam my tax return will be sizeable this year and I want to blow it on an amp. I need to know if the SD 18 has decent headroom. I owned an Egnater Rebel 20 and it didn't have the headroom needed. If anyone has experience with both using the Rebel for reference which has more clean headroom? I have no problem moving up to the SD 30 if that will give me the clean headroom I need.