see it all comes down to preference, what you like and what not. sure gr99 is scored above those but if you ask top reviewers like joker himself they suggest dont get their reviews hard and fast but take it as an idea to what they are like as sound is subjective.
even though gr99 is scored slightly higher than others but i chose SM e30 over it as it fits much better to my liking. I am yet to experience an IEM of this class in this range and is my favourite. you have to listen to it to see how good they are.
I prefer a more of a neutral sound where frequencies are not playing with each other with a slight warmness to add texture to it. I like tight & punchy bass with fast attack times with liquid midrange and some good sparkle in treble to which e30 suits the best. If you see, there is not a single iem in this price range with a soundstage as wide, open and airy as the e30 with great imaging and seperation and comfort that even a class or two above cant match. Its considered to be a budget entry level audiophile IEM by top reviewers
. Once i asked "Clioes" one of the top reviewer for an upgrade to my e30 and he said gr07 would be a good direct upgrade to my e30. Seriously one has to listen to it to see how good they are.
I didnt take this into account as OP was looking for lots of bass but by saying that i dont mean e30 lacks bass. Infact e30 bass goes very low with good quantity and excellent quality hitting real hard down the lows. Its the kind of bass i like.
So for me(as per my taste), in sub 3k price range the crown goes to Soundmagic E30