Thanks for the information. I have spiral blades but have yet to buy a scroll saw. I'm like; if you build it, they will come. Maybe the same will be for my scroll saw. 😉
I use flat blades 99% of the time. I like the Pegas modified geometry blades because they are very sharp and track straight. However I do experience a higher frequency of blade breakage with these blades than I do with FD blades.