The Sanderson Life's claimed weight is 4.6lbs for the size 18, while the Cotic Soul's claimed weight is 4.4lbs for size 17.5. I wouldn't say that difference is much to be concerned about. It might show through as the Life feeling a little steadier than the Soul, or you might not notice it at all. The Soul used to have a claimed weight of 4.2lbs, but I think they have made it a little stronger in recent years.
What surprises me is that Sanderson don't say on their website what length of fork the frame is designed for. They say the head angle is 70, but that is a totally meaningless statement if you don't know what fork would give you that head angle.
The Soul is quoted at 70 with a 100mm fork sagged 25mm. Again that is moving with the times, as they used to build them to give 71 with a 100mm fork, so they've moved it slacker. They say it would be fine with a 140mm fork, but with say 40mm sag the head angle would be 68.5, which is getting a bit too slack for some people.
I know which of the two outfits I would take more seriously.
What surprises me is that Sanderson don't say on their website what length of fork the frame is designed for. They say the head angle is 70, but that is a totally meaningless statement if you don't know what fork would give you that head angle.
The Soul is quoted at 70 with a 100mm fork sagged 25mm. Again that is moving with the times, as they used to build them to give 71 with a 100mm fork, so they've moved it slacker. They say it would be fine with a 140mm fork, but with say 40mm sag the head angle would be 68.5, which is getting a bit too slack for some people.
I know which of the two outfits I would take more seriously.