I have a Eden WT550 and am getting a 4 space rack case with the view of putting something other gear in the free spaces. However I'm not sure what to put in there I was leaning towards a power conditioner (which are fairly expensive here) but reading some threads here it sounds like I would go just as well with a powerboard with somekind of surge protector built in. My other thoughts were a rack tuner (expensive for decent ones here) and/or a nice compressor. So what would you guys suggest? ps feel free to suggest something completely different if you want.