I’d say it really depends on what you want.
Soul is cheaper, lighter and not so slack as the Stanton.
I’ve had a soul since ’08 (it’s about to be passed on to the Loon though) and I’ve had five Cotic frames in total over the years. So I’m a bit of a fanboy…
I’m about to jump ship though and my Sherpa is due (hopefully) next week. I can’t give you any direct feedback as I’ve never actually seen a Stanton in the metal, let alone ridden one.
My decision was based on the numbers (I’m 6′ so right on the limit of Cotic sizing) the Stanton large looking being a better fit than Cotic and I wanted to go a little bit slacker too. The finish on the Stanton looks to be better but the deciding factor was the stated 3″ tyre capability.
I’d say whatever you choose you’re going to have a cracking bike, just be honest with what you want to do with it and decide on that. Both Cotic and Stanton and great to talk to, why don’t you give them both a call and discuss with them directly. You might find you prefer one to the other on that basis and that’s probably a better basis than ‘listening’ to a bunch of Knobbers on a bike forum…. 😉
Oh my Mk 1 Soul has lasted 8 years despite my lardy arse (and that was pre CE). It’s plenty strong enough.