They’re fine, although I think that Crinacle is far too lenient on the high end with his ranking. I’m pretty much 100% in agreement with him on his B- and below IEMs but the distinction between his A- and B+, for example, seems to me little better than arbitrary.
Tuning is a bit hit and miss with Jomo too, I haven’t heard the Samba but the Haka was weird, the Flamenco pretty good but seriously overpriced, and the Trinity very competent but ultimately not as interesting as the Khan (if you’re after something that really shows what a triple hybrid could do).
The KSE1500’s DAC is little better than budget DAPs and unless you want to run them straight off your phone I would recommend the KSE1200. Out of the box it’s as or more resolving than any IEM I’ve heard short of maybe the LCDi4 on a super strong source. A bit too bland for me unfortunately but the technical aspects are superb, and they take EQ exceedingly well.