Just finished reading throught the thread with interest. I used to us Aapri's facial scrub years ago, but then switched to the scrub pads which I preferred as I didn't like the sort of jagged lumps of apricot kernel in the scrub. I'm assuming the St Ives is similar?
I now use Neutrogena's Visibly Clear blackhead eliminating daily scrub every second day, except on the one day a week that I use L'Oreal's microdermabrasion kit which I absolutely love. My skin is glowing these days, with fewer blackheads and breakouts. I've been doing the above for about six months.
Incidentally, when I went for a facial a couple of months ago, she told me a brilliant way of getting rid of blackheads that I've found actually works without injuring you skin. Just use the looped end of a 'kirby' hair grip (one of those doubled up bits of wire type clips) - press it just hard enough on your skin so that when you drag it over the affected area it squeezes the blackheads out. It's really good fun, in a gross sort of way!