Thanks. One thing about the PL-1:
"So 2 would be better but have another slight disadvantage: you have to press the deck 1,2,3,4 also when you use 2 decks - no way around this."
I thought it's a problem only if you use one unit. With two don't you just set each unit to the desired deck (one to deck 1, the other to deck 2) and it stays that way all the time, unless you want to toggle for decks 3 and 4?
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