Tivo Roamio vs. Channel Master DVR+

I'm looking for something to replace my Samsung DTB-H260F HD tuner (I'm strictly OTA for TV) that recently died. I've read a lot about the Channel Master DVR+, and I have some concerns about the experiences some people have had with it. On the pro side, it's pretty inexpensive and they say the picture is great and the user interface is good. On the con side, some people have had glitchy recordings, the remote is somewhat awkward, and the firmware may be an issue. I have a Series 1 Tivo with lifetime (yes, it still works just fine) so I thought I'd check out the Roamio. On the pro side, I like the Tivo interface (and I assume the Roamio's is similar), and I haven't seen any disappointment with how it works. On the con side, it costs more (with service). Does anyone have experience with both these devices? Or can you give me any guidance on your recommendation? Thanks.