I have both feet aligned. I feel like crap with one foot forward, I even use a power jerk when jerking because I feel much more stable that I do when split jerking. But, it is a matter of personal preference.
Both ways are actually acceptable for pressing, however, it is rare you see someone in a commercial gym with one foot forward because they think it is more comfortable, usually, people see pics of a weightlifter doing a split jerk and they are trying to mimic it somehow.......but, again, it comes down to personal preference.