I have never heard Lais speak, so I dont know how "bad" her English is, but Adriana's hasn't improved for like 15 years! She still has the thickest accent and constantly makes mistakes while speaking/posting online.
Ale's on the other hand, is way too funny, she is trying way to hard, I can't stand her speaking.
In fact, most foreign Angels are quite bad doing interviews, but i guess it is all about the personality you are showing through your interviews. Doutzen speaks pretty good in terms of grammar but the way she speaks: gentle, soft, shy, it's like the biggest adventure of her day is to give an interview.
I liked best Marisa and Heidi as spokespersons, their personalities were just outshining everything they were saying. Same goes with Gisele, despite her accent too.
Candice can be very picky/lazy, same for Miranda. They are just trying way too hard to sound knowledgeable.