... I would like the Harmony 350 call! After I already have a 600 and a 300 in use have, I can not describe it otherwise. As usual, perfect u. Simple programing and smooth running, with the 350s I control 7 devices, in the meantime also times "exotic", which were not present in the Logitec database, such as a Blaupunkt sound bar from discounters or for some time USB port switch, all were Portable programmable in the simplest way and were served, missing or insufficient functions have been supplemented or adapted in a very simple way very well. I would almost say that the Harmony 350 is more comfortable than the 600, although it has no display. You get used to very quickly because the four "My Devices" keys are each occupied with dual functions (long and short pressure) and thus allows the selection of 8 devices. Incidentally, I can wear or fatigue of the keys, as mentioned here in some reviews, (at least so far) not confirm the 600 and the 300 are now several years old and funktioneren, when used daily, flawlessly until today , That only one action "Watch TV" is Portable programmable, does not bother me personally, even with the Harmony 600 I never more needed, but of course that is personal taste.