You might want to read the property threads or the Vegas family thread to learn more about each property. Also, please define your definition of "better". Better for what/how/etc. That would allow others to better (pun intended!) answer your question. Reading the existing threads may already provide the answers you seek. There's a search function in the upper right corner, if you're not yet familiar with it. Alternatively you can google either property+flyertalk & it will bring up the appropriate threads.
Cheers.