which cuff to measure to

I wear both French and barrel cuffs. I like my barrel cuffs to fit more snug than French cuffs. Because of this my French cuffs rest lower on my wrist than barrel cuffs do making the French cuff sleeve seem a touch longer. Most of the sleeves on my sport coats, suits and blazers are too long since I bought them second hand. When I bring them in, should i have the sleeves altered to my French cuffs or barrel cuffs to show the right amount of cuff?