Jackpots and Payout Structure. In addition to personal preference, players should evaluate the features and payout structure of the machine. Players are frequently drawn to progressive jackpot slots becausewizard of oz slots of the possibility of life-altering payouts; however, their RTPs are usually lower than those of non-progressive machines. On the other hand, while non-progressive slots might pay out more frequently, they don't have the huge jackpots that progressive games do. To find a machine that fits their gaming preferences and budget, players should carefully consider these factors and try out a few different models.