I've used both LDC and SDC. I started out with two Rode NT1A's (LDC's) and had no end of problems, positioning moving here and there, far and near for weeks on end. I finally dumped them and got a pair of Oktava MK012's (SDC's) and they are a dream to work with. I don't use any science to set them up, I just place them approximately a foot away in XY and they give nice results every time with my Seagull S6. I'm just a basic home recordist and I use a budget Focusrite preamp
