The Showstopper has the unhappy characteristics of receiving the time from the program guide - delivered by phone modem (!!) - and although there are some workarounds, it's believed that without the program guide, the clock will drift (and certainly be out of whack after a power failure, etc.), making use as a manual programmed DVR impossible).
So, after much thinking about 513 vs. 515, I saw the recent post about 10 515's available at Amazon. Last night - 8 left. This morning - 2 left. I got one of those this morning. Looking forward to decoding the characteristics with the skip function codes and putting it through initial testing. Thanks to all who have uncovered much about this device and warned of the likely future scarcity.[/quote]
If you're concerned about power failures get a UPS, it's worked well for me and other posters. As far as the 515 goes you will have to timer program manually so unless you can find a station sending out a reliable time, you will have to reset the clock depending on how much it drifts. There is info on this board concerning modifying the crystal to minimize drift, so if you're handy have at it. Good luck with your new toy.