I'll kick this off with some of my findings from the past year.
Blue Jeans Cable (BJC) - The RCAs are really a bang for the buck king. Yes, they can be beat, but it takes some cash. Excellent build quality, great sound, custom lengths, reasonable prices.
BJC Speaker cable - If you're just buying the wire and adding your own connections, this is a good value. I went with the welded terminations using locking bananas. The locking bananas are easy to work with, and well built, but I did have them come loose a couple times. Gave me quite a scare I had larger issues with other gear. It's something I wouldn't risk on my high end tube amp.
The Zu Cables going for very affordable prices on ebay are highly recommended. At those prices, a real bang for your buck. I love the RCAs, and I intend to buy a few more. Currently comparing Libtecs to Wireworld cables in my system.
And speaking of Wireworld, these are cables I've heard in several systems, and just put into my own system. These can start to stack up very quickly in price as you move up the lines, but I can honestly say these are the first cables that REALLY made me comfortable with the idea of dropping more money on cables. The Mini Eclipse 8 speaker cables I am currently using really bring out some extra detail. If that's what you're looking for, these are a great solution. All the audiophile words come to mind right away. Space, air, cymbal decay, a little quicker on the bass. Only downside so far is they do seem to trade off some bass slam. I'm going to live with them for a little while and see how I feel about it. Very different presentation from the Zu's. Both are excellent, but On the used market they cost a little more than the Libtecs, but the original retail of the Libtec's was technically close to double of the ME8. The ME8 might be the more "audiophile" solution, but the Libtecs might be a better long term fit for my system. TBD.
One other line of speaker cables I have heard in some higher end systems doing a few A/B's was Analysis Plus cables. I don't remember the exact model, but I know they were very high up the line. Those were really well balanced in the system I heard them in. Probably worth considering if anyone wanted to check them out.