I am a side sleeper and my husband is a back sleeper.. We have tried those specific kinds and they aren't worth the money. It seems that every pillow we have tried just gets lumpy and uncomfortable really quick. I have bought cheap ones and mid priced ones, but just can't bring myself to spend any more since the others don't last a month hardly. So, what have you found that's comfy and lasts a decent amount of time before it turns into what feels like coal lumps.. HELP!!!