If you are at home then a nice pair of home headphone, that is full sized open backed headphones would be a nice compliment to your IEM. You have to consider manufacturers are constrained by physical size and can only do so much. There is no comparison when listening to my Senn HD600. And generally at home you are using home sources, whilst on the road you have to put into context you are plugging said IEMs into a portable
Unless its the significant other not wanting you to disturb with headphones which leak sound, then as I try to explain in my link (its not my thread

), there are imo better alternatives than active noise cancelling
That UE series has always been bass-biased, quite apart from being Frankenstein plugs. At least you did not buy the 'EB version
Can't really say more without knowing your home/portable sources and your preference in music
But for nearly £300 you can buy an astonishing headphone...