XLR connectors

Hello, 
I bought my XLR cables from EBay. I have tried several of their cables. They are from their older lines but they all did well in my system. Diamond Back, Red River, Columbia, and a silver version Mackenzie. I really like the Diamond Back which is the cheapest. I hated the Red River. Too much of a tin can sound. Mackenzie was good, but too bright and Columbia is my favorite but very expensive. I have a fully differential system. Regardless off it being XLR it does color the system sonically. If I ever get a YouTube channel going I will prove it. Diamond Back is about 125 for a two meter pair on EBay. 

The Vampire ones are a best bang for the buck xlr connector. Very high quality. 

I have 4 different brands of balanced cables, all with different looking connectors. I can't hear a difference in any of them.

Along with the good advice by those who have posted a comment  here, Chris at VH Audio will be very helpful for your XLR needs.

I recommend reading up on the Audioquest line of connecting cables.  They do a lot of R&D on the type of materials for the underlying metal and in the platting process.  They also do a lot of R&D on insulation type, grounding materials, and noise dissipation.  It's the noise dissipation that will provide the most sonic improvement for your system.  Audioquest makes a number of models that are not terribly expensive.  Of course, they offer a number of models that also approach stratosphere price points.  I have been using their line of products for more than 30 years, since the company was very young, and have always found them to be superior in so many ways, especially sonically.  I have always bought new product but you can easily find them used, on eBay, for about 50% (plus or minus, depending on age or demand) less than the price of new.
Good luck.  No matter which you settle on, do enjoy the music.