There's an older quarter machine, Money Mad Martians, that I enjoy. The bonus gives you 4 different offers along the same lines as Top Dollar, but unlike Top Dollar, the bonus on Money Mad Martians usually pays a decent number of credits (85-105 credits are typical bonus win amounts). This machine is available at most CET properties in Vegas. I also like quarter machines where the bonus allows you to "spin" a wheel on the top, such as Monte Carlo or Fortune Finder. I like quarter Bonus Frenzy which has a 4th reel that has features such as a multiplier (from 2 to 10 times), a respin, or additional credits with a winning spin on the other three reels (up to 500 credits). Finally, I also like quarter 10X Pay, Triple Cash, and several other classic machines.