I was there shortly after they turned up the UMTS network and was last there in Sept. I constantly achieve 800Kbps+ speeds in Vegas. Be advised, if you get a Sierra U860, you may not want to use the Cingular Connect software. Cingular had an issue forever ago that still hasn't been corrected where their software will 'be confused' by the multiple networks (former AT&T and Cingular networks) and may not find 3G service or will hunt between the two and show no service for extended periods. I moved to the Sierra Wireless watcher client which is far superior and allows me to lock the card to UMTS as I wish, so I can't say if it's still happening but it was a massive problem that Cingular could not resolve at the time.