How high wattage wise do you tend to vape, and at what resistance?
The DNA 75 has a voltage limit of 6.2V vs the DNA60 and DNA200's 9V due to being their budget board, so you need to build reasonably low to be able to utilise the full power of the device-to me this does not matter, but may be a factor in your choice of mod.
I love my DNA75, and it has become my mod of choice to take out, but the 200's (Even my converted 133) seem to offer power that is more immediate, even with the same preheat and punch settings the 200's seem to reach temp immediately while the 75 I can only describe as 'softer'.