No experience with either of those whites, but a little more than 20 years ago, I had a United Way red 50/50 printed white turn pink a week later and I haven't done one since. Since these's usually a cotton equivalent, I figured why bother?
I'd leave the headaches for someone else. Apparently, you this time around.
I'm sure that some of the guys here will suggest a real poly ink rather than a low bleed.
btw, I remember a few years back hearing then Union Ink President Richard Labov say that dye jobs were getting so bad that they were even seeing problems with some cottons!
on a side note, I really regret that Richard passed away before this place came into fruition. He would have loved it.