Standard Aragonite seems to be fine for most. I tried the fine "sugar" sand and it just resulted in a sand storm.
The sifters you choose should depend a lot on the size of tank, current inhabitants, maturity of system, etc. Steer away from stars unless you have a very large, well matured system. Nassarius snails are probably the best, easiest, etc. sifters for a new system. Blennies are cool, but you'll need to make sure that they are compatible with the other fish you have or plan to stock. You can always DIY the sifting with a long wooden dowel or anything else that will reach.