A lot of variety and not very many free bonuses
I always loved Spree bc of their variety and their Spree Hunt. However, there's not a lot of free play available and not a lot of extra bonuses. They do pay quickly, but still need more bonuses and free gifts. One other thing, the Gravity Wheel is so obvious when it's slowed down on purpose so only the house wins and when the big multipliers come out, they rarely hit.