I use my MFK700s a lot and my 0 degree base more than the 1.5 degree base.
Where I do use the 1.5 degree base is trimming very thin edge banding, less that 3mm. On such thin banding the slight slop is not noticed, but the advantage is less chance of marring the top surface.
With thicker banding the 1.5 degree slope is noticeable. To trim that, you need to be careful and pay attention.