I have a Mathews Q2XL. I love the way this bow shoots, feels, and looks. I will also admit that I did not need to purchase such a high-end bow. My reasons, whether they are right or wrong are as follows:

I believe in buying products right the first time.
I prefer to make purchases with well respected companies that offer lifetime warranties on their products, i.e Mathews, Hoyt, etc.

I'm in my early 30's and made the purchase with the intent of not having to purchase another bow again if possible (company closing, or fault of my own).

I feel many people view making purchases the same way, whether it be bows, boats, cars, watches, etc (You see my point).

So to answer the question, No I do not believe from a strictly functional standpoint that the higher-end bow are worth the significant price differances with the mid-range or even some low end models. As stated above, you do gain some bells and whistles.

To each their own, that's what makes the world turn.

Thanks and good hunting!!!
jt