Higher wattage, higher volts for the same resistance, will be harder on the coil.
The major reason for using a variable voltage/wattage device is to get the power level you like best. Do you think the additional expense of replacing coils more often is worth the difference in taste or vapor production or whatever? You are the only one who can decide for yourself.
The cost of coils, for me, is nothing compared to the total cost of vaping. I like vw.