Speaker upgrade

With the help of my local technician, I upgraded my Snell E-III speakers with Solen litz inductors (in tweeter and bass/midrange crossovers) and installed Jensen Alunimum PIO caps (12 + 6 uf) in the bass driver crossover. The upgrade added much bloom and the sound became more uniform and consistent (which was apparent after some burn-in and after changing the speaker cable). Now the dealer offers to install Jensen PIO caps (a 6uf cap is required but the Jensens do not have such value) saying they are the best and more accurate (which I doubt: they are good but not neutral), using 5uf + 1 uf values. May I install other caps instead such as 6 uf Relcaps/Multicaps or Cardas caps which this dealer handles or I should stick to the same brand? Also, he offers to replace Monster speaker wire with Kimber 8 TC, but I doubt how he will be able to solder this multistrand wire.

I will appreciate any comments and recommendations.

Alexander