You will see slight differences between solid core and stranded core coax if you simply look at the various cables on the market, but then again, you are looking at two different cables. Conductor size, dielectric, and % of shielding all make up those slight differences. To put it another way, if two cables were identical other than one being solid core and the other stranded, you will not see ANY difference in performance. Also copper clad aluminum is just as good as solid copper. VERY high-end low-loss transmission lines often use copper clad aluminum to reduce cost and weight. If the big commercial guys use it, why can't a CBer?