Things I have found that I don't like about certain bows I've shot.

1) Rough (not smooth) draw
2) Shot shock
3) Weight (actual bow weight)

I would recommend a Bowtech....probably any of their latest models would seem amazing if your shooting a older bow. But honestly, any of the top of the line bows would do you just fine if your making a big jump (from old bow to new bow). The above are just some things I have notice that might be worth keeping any eye on.