I think you talked yourself out of needing a new bow
and odds are, you really don't
10-15-20fps, doesn't make a huge difference from 10 to 30 yards or more, sure there nice to have, but surely not needed
bow makers keep coming out with new models and such, cause its a business, if everyone kept a bow for 30 yrs they would all go broke
its also the reason there is a bigger mark up on bows over guns!
or surely used to when I sold both
a modern bow should last you 15 = plus yrs with just replacing strings as need be, and taking care of it
till they break the 400 fps mark, I don't really see the need of up grading for most NON sponcered shooters/hunters
as long as a bow fits you is set up right, and you shoot it well, save your money and enjoy what you have, till you feel like adding a spare bow, or just like spending money on a new addition