I have a Retron 3 and it does what it's supposed to. Gets frustrating sometimes getting an NES cart to read, but that was the case in the original, too. Then again, I hear the top-loading NES didn't have as bad of a problem with that...
I've been told the Retron 5 has had hardware problems more than not, and it apparently receives updates over an internet connection... and more than a few people have had the updates brick their system. Which is a shame because they're releasing a Master System/Game Gear adapter for the 5 and I emailed the company directly and they said it wouldn't work on a 3.
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