I was weighed down by the GRE vs GMAT debate for a while. The breakthrough came when I finally checked the specific requirements of my desired grad programs. You wouldn't believe how many schools accept both tests or actually prefer one over the other!
I recommend making a simple spreadsheet where you list each program and their test requirements. It not only cleared up a lot of confusion for me but also helped me focus my study efforts more effectively. Plus, some schools even have test-optional policies, which I found tucked away in their FAQs. Definitely worth checking out!