Hi all, gotta introduce myself first.\n\nI got into high grade audio when I worked as a broadcast engineer. Playing with studio grade equipment kind of spoiled me. However moving on into the world of chemistry (I have a PhD in the field), I went out and bought myself some initial goodies. As I was advised and heard demonstrated, I went out and got the following for my living room surround sound (first in my experience) system. To start with the base it is a Yamaha RX-v663 receiver. Paired for the front left and right speakers are a pair of rebuilt Sansui speakers with matched replaced tweeters and midrange speakers and a custom on the cheap crossover. These speakers are good, and when you are a grad student on a severely crimped budget they actually sound pretty good. But the speakers actually purchased with the Yamaha receiver, are the following and are all Paradigm. Mini Monitors v5, cc-190v5, adp-190v5, and a dsp-3100. \n\nI do have a second system, 2.1 stereo on my computer. This comprises a Sprout 100, a Pinnacle 100 subwoofer, and a pair of Martin Logan LX-16 speakers. This second system has served me well. I am not looking to upgrade this.\n\nNow, I am cleaning my abode and am assessing and fixing and figuring out what I want to keep, what should go, and what needs to be tossed. In this mix, the system in my living room I assessed and did some reconfiguring to bring out of it's coma which is the 7.1 surround sound Yamaha receiver system. For what they are, every speaker I have all sound as good as the day I bought them (don't ask what I bought the Sansui's for). But looking into the future, I am considering a few upgrades to head to 4K capability. To that end I did go visit a local retailer that had an Arcam 20 and an Anthem MRX 720 both on demonstration (was advised the MRX 740 would be out by the end of the year and wait for that). I like the Anthem 720 for its room correction. The Arcam even though paired with better speakers did not have the same "presence" that the Anthem MRX 720 had. Both receivers should be a distinct improvement over the Yamaha RX-V663 receiver. However for the moment the Yamaha is what I am using. If I upgrade to the MRX 740, is there any thought for or against?\n\nOn the speaker side, I liked the ideal of the Paradigm Premier 800F that I heard demonstrated. There are better speakers out there, but for the price to performance the upgrade from the Sansui speakers would be a definite change. Currently the Sansui speakers are my front left and right. I do have a question about the new Paradigm Premier 800F speakers, would they pair well with the v5 speakers mentioned above? And would the Premier work with the current receiver or should I upgrade that also? Also, the cc-190 v5 is a bit thin for performance. Is there any good recommendations?\n\nBut with the current state of affairs, I could always stick with the current stuff I have. I did fire up the current speakers, and for what they are, with the current hardware I am using, running the speakers back in after years of not even being turned on, I can definitely attest the current system sounds amazingly good. I am not looking to upgrade unnecessarily, but I am also keeping an eye out on the future. 4K IMHO is not yet fully in front of us, but the FCC has reallocated the TV OTA spectrum for 4K broadcasting. Also interestingly Netflix and AppleTV also have 4K services. But all my stuff is either CD's or are standard blu-ray DVD's in 1080p. My current equipment can handle that now. I don't have to upgrade, and what I have now works well. My biggest complaint is the complexity and difficulty of programming correctly the Yamaha receiver. Given that, since it already paid for, I can use what I have now. Is there any thoughts?