I completely agree. I have my XPL3000 and love it. Not saying it is the best, since I have not tried too many of the other boxes (dreamlink, formuler, etc..). But I do have piles of generic Android boxes (including crappy old chinese generic Nex S905 based boxes, BeeLink GT1 S912 box, and even 2 Mii Box 3 units [legit AndroidTV] ). None of those boxes with any 3rd party app (stb emu, iptvsmarters, etc..) can even come close to the interface of the buzz. The closest app to give you a nice experience (UI at least), was Perfect player (which is what the original OK2 apk was based on). It has a very nice interface, but launching it takes a good 5+ minutes to load all the M3U and EPG contents. It was just too painful every time, I could not continue using it.
Even most cable or sat company STB boxes would cost you about the price of a buzztv box (or any other). But they would be limited to that service. The buzz (and others) can not only be used as nice STB for IPTV, but you can load all sorts of other Android apps on it.
Yes, if you are used to just buying cheap $40 to $60 android boxes, this may seem a little steep. But you get a great iptv experience, with amazing epg, and best of all, a company that releases regular updates, with not only security and bug fixes, but they constantly add new features.