u/Effective_Paint1159

I'm really enjoying the sound quality in momentum 4 especially the personalization. I'm thinking of upgrading to another pair for listening. I've heard great reviews about hdb-630 sound quality. Anc is currently not my priority. However, does the extra cost justify the returns? Is the hdb-630 sound "flat" and an acquired taste? Anyone who owns hdb-630 could shed a light on this. ​