The Discovery will always be their best record . I find The Discovery their best, like some people say. Soul Sphere is great, but The Discovery will absolutely always be their best. For some bands, the 3rd album is the absolute best.
I never got into anything these guys have done besides The Discovery but Soul Sphere ill admit was better than Tomorrow We Die Alive. Still though the only tracks that i like from it are The Other Half of Me and Illuminate the rest is just meh
As someone who loved everything before Tonight We Die Alive (cause I found the album repetitive with no standing out), I believe Soul Sphere is a massive improvement. Just my two cents, don't care who does or doesn't like it.