The headphones are more than perfect in sound and fit!! I have tried much more expensive ones from Shure and I have to say that it easily outperforms its competitors at least in value up to 300 euros. (I didn't have the opportunity to try more expensive ones)
Perfect bass, you can hear the instruments separately and really even for music like that from your phone they are worth it and more!
Don't even think about it, I say it with absolute certainty!!!

Yes, they are that good. Personally, I prefer them over the Beyerdynamic DT770 pro 80ohm that I have at home, they are simply better. Balanced, high quality, powerful, combined with a decent USB DAC on my phone I listen to music quite seriously (for my needs). At €70 I don't know what the competition is doing, I don't have a large collection of headphones or experience, but it doesn't compare to any in-ear at around €30, which I have tried quite a few.

I am not an expert in headphones, but I have a relevant experience, which I describe in my review for the Sennheiser HD25. Having read and seen many reviews for the pro x, I decided to get them.... Well, the headphones are just amazing! Everything you read and hear in the reviews is 100% true.
I will mention only 3 things:
1) The tuning of the frequency range by the manufacturer is probably accidental :) , which, combined with the 5 drivers per earphone, easily surpasses headphones worth 200€-300€.
2) As mentioned by a reviewer, after taking them off after listening to music for a while, I find myself wanting to put them back on. They provide such perfect sound.
3) As another reviewer mentioned on headfi.org, stop reading now and buy them.
Without repeating the usual references to frequencies, what made me feel is that I am listening to my music sitting in the center of the living room from a super expensive HiFi system. For 30€-40€ abroad, it's unbelievable, but the same applies to the 85€ in Greece. There are professional musicians who bought a second pair just for backup!