I did a buton-by-button comparison between this remote, an Atlas OCAP URC-1056, and the UEIC
Titan Cable remote. I don't believe that the JP1 community has yet taken a crack at the Titan, but it looks like it'll fit right into the JP1.3 collection. Visually, I find this RCA remote similar to the Titan. I especially like the arrangement of the transport key array - probably the only significant advantage I would give it over the OCAP, which has the same nine buttons is a 3x3 square layout.
Anyways, the main differences are (taking the OCAP as the baseline):
(1) Neither the RCRP05B nor the Titan has TWO SEPARATE buttons for "Menu" and "Settings" as the OCAP does. I use them both so that's a big deal for me.
(2) On the other hand, the RCA has separate buttons for "Live" and "Jump Forward" where the OCAP and Titan have only a "Live" button. (I've LKP-ed both functions onto that single button on my OCAP)
(3) The Titan does not have an "INPUT" button which the other two have.
Aside from that, all three remotes are pretty similar, apart from some minor layout and nomenclature differences. The most significant of these are
(1) the location and distribution of the aforementioned transport key array; and
(2) the location of the Day +/- and Page +/- keys, which have a weird array I don't care for on the RCRP05B.
So the OCAP and the RCRP05B have the same number of buttons, while the Titan has two buttons LESS.
As for the 8 devices, I notice that the RCA has the three middle device buttons "double-labelled", if you will. Does the manual discuss anything about programming two devices on these device buttons or "stacking" devices somehow?