As a big Guy with a long draw length, I will have to agree that your choices will be limited to one or two models from a few of the manufacturers. Look on the websites of Matthews (don't know if they even make a 32+" inch bow), I think PSE may have one model, Elite may have one model, Hoyt will have a couple or three models to choose from, Bowtech (I don't think they have a model with a draw that long). It is imperative that you get a draw length that fits you! Don't let anyone talk you into a short Draw, "because most people shoot too long" or "It's better to shoot shorter" what that means is I don't have any long draw bows, so I am gonna sell you one that fits me and convince you that is what you need.
If you are 6' 4" and of average build you will be somewhere between 32" and 34" draw. If you are slightly built with narrow shoulders you may be 31" or 31.5". If your are long armed and somewhat gangly you will probably be more in the 33" to 34". If you are Long armed and broad shoulders you could very well be 34+". You will really need get with a pro shop and let them fit you. After determining your dominate eye, draw length is the most important factor in getting the right bow. Bow weight can be adjusted up and down, you will gain some strength as you shoot more so weight is important, Dominate eye and draw length are not going to vary with more or less shooting. If you are done growing they will never really change (barring some kind of injury).
Where do you live?