Hi Bill,
Separating high-current components on their own line is _always_ preferable to puttinal all components on a single line, power conditioner or not.
Those that take amps off of a separate line and place them with other components on the same line are removing a direct dedicated AC source, which amps prefer, and ganging them together with all manner of other components. Running all the components through a single power cable to the wall from the conditioner inhibits and corrupts the current path compared to keeping them separated.
Nothing you are doing is inherently bad, it's just that no power distribution system can make up for what is gained by isolating high-current electronics from noise sensitive and low-current electronics --on separate lines. That is why some companies make vairiably sized power distribution units. So those that have multiple lines can take advantage of them and still benefit from noise isolation.
Hope this helps,
Grant