if you an afford either one go with the Ruby, i am not a great fan of the dlp's and there wheel noise and rainbows. but dlps do have great black level's. remember the ruby can display 1080p. good luck.
Since one is about 3x the price of the other (unless you are talking about the Smmy 800), it is no contest with the Ruby. The Samsung is a great 720p DLP, but it is not a 1080p LCOS contrast ninja the way the Ruby is.
I haven't seen the 710. However I have seen a couple of 3 chip dlps that were nicely calebrated and in the Ruby (~$10K) pricerange. I thought they were excellent, and was starting to wonder what all the fuss was about on the 1080p ruby. Then I went to a shop that had a ruby propperly calibrated. It looked like I was actually watching film. It was head and shoulders above everything I saw. Obviously there are other things to consider - but even at twice the price... I would be super tempted not to get a Ruby. In my opinion I would be super tempted to get a 1080p display in 6 months even if I had a 3 chip 720p let alone a couple years. I can't guarantee you something spectacular isn't coming in 6 -18 months... that's the nature of the game, but as I see it there is a reason the Ruby is the hottest thing going right now. If it's in your price range, go for it.
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