You should try a type called silicone foam ear tips. They are like a hybrid of memory foam and silicone. They seal way better but not too much and are more comfortable than either option to me. I used a brand called diofit, but I would guess more brands make them. I ended up using every size in the set just to avoid going back to regular silicone and they all worked pretty well. I should just buy a new set, but I kept thinking these headphones would die soon with how much I use them.