I had never heard of el Companero- But it definitely looks…untraditional? hehe
The BEST bareback pads are the ones like parelli. They are REALLY well made.
However, I am not into western cinches, I much prefer a dressage girth. SO I bought this one:
http://www.horsefriendly.com/store/suede_bareback_pads.html
It has the same great suede as parelli and very very sturdy. Then it has leather billets around. The billets are stitched with nylon in between so they are durable.
I sometimes used a saddle pad- or even a wither pad under mine if I am riding my thoroughbred, I thinks it’s more comfortable for him that way-plus he has a huge bouncy trot and it provides more cushion. But for quarter horses with low withers suede bareback pads are usually not problem. Good luck!
I have used these and they are exactly like parelli’s, just less
http://www.horsingaroundllc.com/tools/4008.htm