I haven't read those yet, but they're on my list! I did just read Lora Leigh's first Bound Hearts book (really short - it's paired with another of hers as Surrender to Fire to make a full book - Surrender is the half I just finished.) It's pretty good, although her writing isn't stellar I was entertained.
And while it's not really a BDSM series, I always suggest Louisa Burton's House of Dark Delights books. There is some BDSM action in them (at least one major portion of each book - like a Hellfire Club ritual in the first one, Slave Week in the second one, and (I think) in the third one there's a good M/F/M scene), and she writes about it in a hot fictional context better than most, in my opinion. I really love the way she writes sex scenes in general, and what makes her stuff stand out and hold up to rereading (something I don't often do) is that her characters are very well-written.