In a modern machine the odds to hit a symbol or even a combination of them depends on the set up of the virtual reel. There are possibilities that a stop in the actual or real reel may actually correspond to many in the virtual reel. The odds to hit a particular image on the actual reel may actually depend on the number of virtual stops which correspond to the actual stop.
In the case of a weighted slot machine top jackpot slots correspond to just one virtual stop. That clearly means the probability to hit the jackpot image is one out of 64 and when the setting of all the reels are done in the same fashion the probability changes to one in cube of 64. Machines which have bigger jackpots, there may be more stops in the virtual reel and thus it decreases the chance of winning the amount to a greater extent.
The availability and breadth of slots is very high as they vary from Egyptian themes to western themes to reel slots. To add, there are bonus games and in game story lines. It is true that everybody has his or her own choice of slots but there is absolutely no requirement to restrict him to just one. In fact it is best to try hand at every game.
There are even slots which come with an attached meter with it. There is always an interlinking of slots there and one who want to play just need to put the percentage of coins.