Which 0.1µF ?
#2
The first ones are fine. The capacitors have slightly different characteristics and the voltages they can handle are different, but really any of them should work.
The ceramics are definitely going to be the cheapest, although at Rat Shack they will probably cost you $2 as opposed to their actual value (~$0.25).
The ceramics are definitely going to be the cheapest, although at Rat Shack they will probably cost you $2 as opposed to their actual value (~$0.25).