I'd assume so, if only to get an extra teleport back to Dalaran tbh. Stats are alright for us as well, with mastery being the heavy stat on it.
I would say that it depends on what kind of content you will be doing and if you have the 250k to spare of course.
- - - Updated - - -
Im not questioning that FoF should be high up in the priority list when it comes to our rotation, Im only questioning that SotW isnt there at all when there are more than 4 targets.
FoF is 2650% of AP since the newest build over 4 seconds reduced by haste with a cd of 24 seconds reduced by haste, while SotW is 4500% of AP every 40 seconds and the cd is not reduced by haste if I recall correctly. This means that with 0% haste, you will be getting 2650%*2,5 of AP out of FoF every minute, while you will get 4500%*1,5 of AP out of SotW every minute. FoF = 6625% SotW = 6750%
Now, this is without any haste at all, and without taking into consideration that FoF pummels ALL targets within melee range of us for the duration.
Im not a theorycrafter, I leave that to Babylonius, Pandanaconda, Hinalover and others, but this is what I understand is the key to why we want to go for FoF over SotW.