It's hard to beat a good grunt call. I prefer them over anything else but I also use a couple can calls and rattle too of course. As far as a "year long" call, go with the fawn bleat. You'll bring in does in the early season and bucks from the late pre-rut to the end of the season.
i havnt had luck calling at all this year....so i think im going to just take my chances at it in the stand..and hopefully doing my homework pays off in picking right spots.. Thats for blind calling....if i see a deer, i might give it a try