How does the PL-20 compared to the Hpm-70? Is it obviously better in all aspects?

The only IEM earphone I've ever had is the Hpm-70 and it is really good, I don't know how it can get better than that.

Recently, I broke my Hpm-70 and I'm really interested to try other IEM, perhaps the PL-20 can bring the music to another level

And by 'bass' do you guys mean the 'boom' sound in techno song? I don't listen to those kinda song but the bass in rock/jazz/pop/whatever song is really important to me as well