If you produce your music (on someone else ones) , wanting some new toy/sounds is legit cause this is the research of inspiration !! back in the days and even nowdays , album were made on one inspirationnal concept/HW/toy /instruments ect ....
In person i tend to get new things for each album i produce to try to get a new "world" each time with my signature of course !!
For the FX side i'm more critical on purchase , we can reproduce mainly 99% of the sound everytime with tools we laready have : question : how fast and would i came to this sounds with my toyz or not ?
Voila Bapu , hope i didin't went to rational lol !