I haven’t tried any Zero Audio IEMs. Are the Yamaha EPH-100s in your budget? I know prices are often higher in the UK for the same gear. I really like the EPH-100 for EDM. The MA750s are good, too- they are a little slower than the EPH-100 from a bass perspective, but otherwise about as capable.
Yeah the EPH100 is out of my range sadly. Its the one IEM I know will be good as everyone agrees about that.
Have you heard the Sony H1s?