Soul is superb… I didn’t get enough time on the Latitude to form a proper opinion but it just felt like another conventional steel frame, not more than the sum of its parts, while the Soul egged me on and impressed from the first ride. But that’s probably just a personal taste thing.
Blue Pig’s a very different beast, tbh if you’re not sure what you want the answer probably isn’t a Pig, the Soul and Latitude are more middle ground. But I replaced my Soul with an Mmmbop (same geo as the Pig) as I wanted something more hard hitting. I don’t regret it but there’s a lot the Soul did better.