So it seems that RTI remotes can control the new X1 boxes from Comcast...
With the following criteria:
1: I learned the codes with book between the remote and ir-pro (Lift the book after about a second of pressing whichever function)
2: You are NOT using RF (I was attempting to use a RP-1)

For me the second criteria basically makes all my RTI installations expensive paper weights as I use processors on 99% of my installs.

In all my years of using RTI I've never had to use their customer support but I'm not holding my breath. I tried calling and after waiting on hold for 12 minutes they hung up on me. I will also follow up with an email, but what gives?

I have heard of success with URC and Harmony remotes.

I also saw a thread where people claimed that Pronto works and that you can pull the codes from that. Definitely don't want to invest time/money into it if it doesn't really work.