I have a LR stardust on my 1100mah KGO and it is working great! Personally have not tried the SR yet, so cannot compare them myself. I think I remember hearing a couple people were using heavy VG based liquids with success, but may have thinned it down a bit. I tried a high VG (believe it was around 80%) and to me it wasn't working good so I keep it to a 40/60 PG/VG ratio or lower. Hopefully somebody with more experience will be able to give you a more educated answer.