It's like 'Clash of the Titans'. Compare, probably the best betting sites in the USA to see which one can give you the best wagering experience.
TwinSpires vs Xpressbet
|XpressBet Review||TwinSpires Review|
|Welcome Offer||$20 - $500 bonus||$100 Sign up Bonus|
These companies have only one similar thing - they provide the ultimate service for US residents. The Xpressbet bonus is better, but TwinSpires has its advantages with VIP rewards and Players' Pools.
Compare the giants to see it by yourself.