For tc, hands down the king, even tho i know the concept of tc, i didnt really understand the actual dynamics of it till i started using a dna mod (how power gets delivered, how the mod actually handles the information, etc)
That being said, the axon chip charges faster i think, and i am pretty positive the crappy gene.tt chip charges faster than all of em
the axon and atom chips i think hit a little harder (just my opinion) altho the vapefly chip is slightly better in that dept.
The quest chip i didnt like at first but now i do, on par with any other board, plus the fire button is clickier than the dna and doesnt lose any battery power while in sleep mode. neither does the axon chip incidentally (i found a 2 year old pm80 in my drawer, still on, still 99%. (the battery should have drained just on its own i wouldve thought, just relaying the experience)
the only thing that is kind of agreed upon by most people, is that dna boards use better quality components and will therefore last much longer than the others, and so far that has been my experience as well.