As to the question about Redcaps. Most of the redcaps (Strikes in red capsules) are more limited in production and often are considered to be chaser strikes (strikes to go after due to lower numbers produced). Casinos often mixed them in with normal production strikes, some placed them every 5th or 10th capsule in the rack of clear capsule strikes (normal strikes). Beware that this is not always the case. A few casinos placed there turned in to the cage strikes in redcaps and placed them back into the machines. So these strikes are no harder to get than the normal ones. So it's just like coin collecting. Buy the coin (Strike) not the holder.
Hope this helps.

Later;
Jim