I, too, prefer the HCM (Shilala) beads. Main reason is that they are darn near zero maintenance, put 'em in and they do their job. No refilling distilled water every now and again. If you have specific questions about these, PM Michael (CigarNut), as he sells them. Have been using these for almost five years and they keep my vinos rock steady at 65%H.
And as Jason stated, they support a fellow BOTL as well. Win win for everyone!!