WCDchee posted a great review of the Katana IEM on Head-Fi. The Katana is a 9 driver per side IEM from Noble which is priced at $1,850 (18% more than the Kaiser). From this an other reviews the tuning is for a more referenced SQ than the Kaiser which is more “fun”.
Pros: Very well tuned and well balanced, detailed and spacious
Cons: price can be high for some