Hello Ezz!
In terms of flavor the Heron is spot on. The coil and wick setups are endless as well.
Being familiar with high genesis, the two are different animals and tough to compare.
If I had to pick, I'm on the Heron team due to the versatility. GP started the use of fluff in the
vaping arena and many have followed their lead.
Don't get me wrong as I respect Matt's genesis creations much but, honestly the form factor, ease of maintenance, no leaking, looks, engineering have set it apart for me. We will always own at least one Doodlebug but, it is not in our daily rotation as the Heron.
But again, completely different atomizers my friend. I think 9ballAJ would be another to answer the direct question as well as the other high end genny users(just unsure if they own RSM) - VapinjamminBill and MsAwrsomeAkdare.
A Heron and Spheroid is a must have in your collection. Good Luck and feel free to hang out anytime.