Anti-cables VS. River Cable/cable lengths


Looking for some feedback regarding how these cables compare and any suggestions for other low-cost cables to consider. System: Creek 5350 se classic, Rotel 1072 player, B&W 703's. I have fairly long runs: 15 and 27 feet and am wondering how important it is to use the same length of cable for each run???

Thanks!
stuartk
Thanks for your suggestions. I need long (30 foot) runs and audioart only lists up to 12 foot runs on their site, Slaw3. Cincy_bob, I have contacted Morrow about the question of long runs, am waiting for a response. I also spoke with Paul at Clear Day (what a nice guy!) and he had concerns about such long runs, but unfortunately, I'm stuck with 'em. Mapleshade advertises cable they say is specifically designed for long runs, so I may try that, too.
Call Robert at Audio Art, he'll custom make you anything you like, and will discuss your system and specific needs at length.
30 feet sounds expensive and may not be worth it. Various DIY speaker cable recipies may be worth looking into
Because of the cost, if it was my money I would buy bulk canare 4S11 and use bare wires instead of bananas or spades. If it is visible I would add Techflex to the outside and heatshrink the ends. It is a well balanced cable that I have found to be neutral-warm sounding and does reject interference well. I ran it through walls and bookshelves near AC and it is easy to run, is not stiff, and is the equivalent to 11 gauge. That should be a sufficient gauge for your long run. At that distance, resistance becomes an issue, so check out the electric measurements of any cable you buy. Good luck!
Slaw3, thanks for that correction re: lengths at Audioart. I will call them. Somec59/Tgrisham, I'm not typically an electronics DIY'er, and as I'm currently in grad-school, I don't have the time. Nevertheless, I do appreciate your suggestions. At this point, I have Clear Day, Morrow, Audioart, River Cable and Mapleshade on my list.

I can't afford to buy trial cables from all these vendors, so I'm going to have to narrow it down more. The Mapleshade Clearview Golden Parallel is advertised as designed specifically for long runs, but I don't have the experience/tech. knowledge to evaluate that claim. It's actually one of the lowest priced of all the above. Anybody know anything about it? Paul at Clear Day quoted me a great price, but cannot offer me a 30 day trial, due to the long runs. Anybody heard his cable?