Doesn't take me but a few minutes to decide. That's why I don't buy bows sight, or I should say shot, unseen. If there's a brand/type of bow I'm interested in, I make it a point to shoot it, or one just like it, before I buy.
If I already have or am familiar with a brand and model from a particular bowyer, there's not much risk in ordering/buying another with similar dimensions. But if it's a bow I've never shot before, I make it a point to find someone who has one, and take a few shots with it. Or, I attend the bigger shoots where most of the vendors will let you try their bows and shoot the bow I'm interested in there.
Over time, a bow I like may lose out to others, but it's a relative thing. It's not that I don't like it, it's just that I like others better. Then it has to go down the road. Don't do as much of that as I used to though.