I have seen reports by some that guide info disappears if you drop locals and have only OTA. And, at least for the locals in Vegas, the OTA programming info is (1) stale - the channel info listed on the guide isn't the right channel and for some the right one appears on a different one and (2) may not show any programming at all - e.g., here in Vegas, my OTA guide for 8-1 (CBS) OTA only says "CBS" for each hour slot while the locals from dish (8-0) show full program info. Many of the "dot subchannels" are incorrect and list no programming. It's hard to set up timers with this gap of info which is why we keep the locals.