im after a 5.8m wave sail

this sail will be used in winds of 15 knots and no stronger than 18 knots

im currently using ezzy sails
ive used the 4.2, 5.0 and 5.2
i originally want to stay with ezzy but heard that the bottom end of the bigger sails isnt that crash hot as this will be the deciding factor of choice of sail because of the light wind use and wanting to get on the plain quickly
did i just make any sense

im keen to try out the severnes