[andy_m]

I think the issue is that TiVo doesn't dedicate a tuner to live TV meaning that in the example given all the tuners were in use whereas v+ would have allowed you to carry on without asking to change channels. Of course, as you rightly point out, the benefit is that TiVo actually does the job its supposed to do ie. deliver three full recordings, whereas v+ would have clipped two of them.