Sins, have you tried the Burts Bees clay mask? Here, it's like $8 a jar and it lasts a long time. You mix the powder with a little bit of water and wear the mask until it dries. It really helps me with the oil/pore thingies. Once a week does it.

I've never tried the microdermabrasion wheel contraption. Other gals in the office swear by it, but I just haven't gotten comfortable with the idea yet. Honestly, whatever makes you shine, go for it.