50' speaker or 50' interconnect?


My equipment rack is at the back of my room and therefore I currently use 50' speaker cables. I have tried long XLR cables instead (moving the amps up by the speakers) but haven't had good results (perhaps due to capacitance issues with the cables).

I'm looking for suggestions for interconnects that can handle long runs.

I'd also be interested if anyone else uses a speaker cable run as long as me.

Thanks.
madfloyd
Post removed 
Post removed 
I'm using about 35 ft of balanced Anti-Cable interconnects from the preamp to the amp with about 4 feet of speaker cable. Sounds great....no noise, big, wide, deep soundstage, etc.
If you are running balanced interconnects, you need to make sure your equipment is also truly balanced to reap the benefits of balanced. An XLR jack does not mean truly balanced, necessarily