I haven't tried Roku. Has anyone had any experience with it?.
Many of us have Rokus, see SatelliteGuys forum: http://www.satelliteguys.us/forums/52-The-Streaming-Video-IPTV-Discussion-Forum, also the Roku forum: http://forums.roku.com/viewforum.php?f=28&sid=6526b4b01b45e6b0a9f7c0a979ee3f31
As northgeorgia mentioned, any channels that work in US may not in other countries, however 5ik.TV works with iPads, Android devices and your computer. I would contact them and ask if you can access them from Peru. If you already have a computer, you could try it out first then decide if connecting your computer to your TV is good enough or having a dedicated device to stream the channels would be better.