Which is better longer xlr or speaker cable

If you run long lengths of RCA - say 10 feet or more - then be careful if you use
consumer Hi-fi grade equipment. Consumer Hi-fi equipment preamplifiers may
not have the power supply and solid design to drive long interconnect lengths
properly. (Capacitance can be a problem) The general recommendation is for
low capacitance cables but it is safest to get a pro audio quality component with
XLR to go really long interconnect lengths.

Alternatively you can get one of these

CK- Belligerent? I merely stated a fact. Of course I acknowledge that everything produced(whether audio or video software) is processed via balanced circuitry. Every live(reinforced) music venue, recording, engineering, or production facility that I've worked has contained a plethora of power transformers, signal cables, power cords, etc, each a potential RFI/EMI(and now digital interference) generator. The whole concept of balanced circuitry was to combat the induced hum and noise that these sources can and will produce. I've yet to encounter a home environment that is that hostile to an audio signal(with even minimal care toward proper interconnect/cable/cord routing). How many home audio pre-amps are manufactured with fully differential circuitry? All but the best that are marketed today with "balanced" ins and outs will convert a balanced input to an unbalanced signal for the pre's gain stages, then back to balanced via active circuits(transistors or ICs). Most power amps with "Balanced" inputs are not fully differential either, which means yet another conversion(and more degradation) for the signal. With all that signal manipulation and additional electronics in the signal path, one cannot assume that a piece of home audio gear will inherently perform better in a "balanced" configuration than "unbalanced". You mentioned the processing and signal manipulation that is so rampant in the industry today(I'd only add "compression" to your list), and I agree completely. It's something we do have to live with though. The cable thing: Hopefully our recorded material was minimally processed and by producers/engineers that did as little damage to the signal as possible. Corrections and EQ's are unavoidable though, and all performed before the stamping process. I've found that the amount correction/EQ necessary depends largely on the quality of the mics and cables in use. Using the same mics: Audioquests in the studio DO make a difference too. From the outs of my BAT VK-D5 to the ins of my TacT RCS 2.2X(both fully differential), I've got a 1m pair of balanced interconnects. My first were Kimber Silver Streaks, then KCAGs and now KS-1130s. Each step yielded better tonal balance, focus, and a wider/deeper sound stage(none were slouches). If a change in a 1m pair of interconnects can provide an improvement in presentation, I have to assert that not going "cheap" on a 5m pair of cables would be a wise decision. YES- Two track: I'll take a pair of B&K 4133's and a Studer A-30 running at 30IPS please! My favorite recordings have always been direct-to-discs. For CDs- AAD made from 2 track masters like the Sheffield Labs(recorded during D-T-D takes) or Dead Can Dance material.

Whatever is "best" theoretically, I suggest you do two things. First, some pricing research to see how both scenarios play out. Generally speaking, interconnects cost more per foot than comparable-quality speaker cables. So you might -- MIGHT -- be better off in terms of bang for the buck by going with the longer speaker cables.

Second, be careful not to lock yourself into something you can't easily change or experiment with down the road if you should want to. For example, if you could split the difference (2- 3-meter ICs and equivalent length speaker cables -- not sure this will work in your layout) you'll leave open more options down the road, since those lengths are plentiful in the used market. Once you get into 5M interconnects, you get pretty short on options.

Thank you all for your comments
Kirkus - you gave me many good considerations to think about. Drubin - I sure am finding that it is true that the market in used 5 Meter cable is very limited.

My summary impression is that of course cable quality matters and probably both long balanced IC or long speaker cable can work, and perhaps avoid long anything if possible. If I do go long IC I will definitely be at least at Morgami quality which seems like a great bargin at thier price.

My house is currently on the market and the non-dedicated listening room is staged for sale making placement of equipment ideal for looks and not for sound. Because this situation is temporary I am look at cheap alternatives now. Once I am settled in my new place I will have a dedicated listening space which I very much look forward to, so as to do proper room treatment and equipment placement - You all helped me think this through. I appreciate that very much.