Question on Machamp/Machoke/Machop Base Set values. Shadowless vs 1st Edition.

I am a big Machamp line fan and have the whole line in the base set from when I was a kid. I am looking into the pricing of these cards and am looking for some clarity on 1st edition vs shadowless.

It was my understanding that shadowless is the holy grail of these cards. Machamp's shadowless is much more valuable than the 1st edition BUT the 1st edition Machop and Machoke are more valuable than their shadowless versions.

Does anyone have insight into this or some kind of explanation?