Over the last 35 years I have gone through several iterations of battery charging and maintainence. It started with the radio furnished chargers hooked into a plug strip with numbers on all of the wires so that each plane and transmitter got hooked to the right charger. T When the TME timer and trickle charge control came to the market I put those between the plug strip and the power outlet. Then Came the multi and variable rate chargers which I also used with the TME units. Finally with the planes using three to five battery packs per airplane I have gone to the Hughes Charge + and Sommer Minron multiport chargers. The cost has increased with each change but the ease of operation has also increased.
In the end there is no correct solution that is either best or suitable for everyone and every type of battery. The batteries are the life blood of sucessful operation so it is up to each person to decide how much of their hobby budget should be spent on chargers.