Like you, I am not a fan of what BP has. IIRC, the Remington black hulls are reloadable. Have to look. I have cpl 16s. But, if you are getting new 16 ammo and not older Rem/Win - then you are (at least my recollection/far as I can tell) getting the same hulls rebranded that BP has... I have not seen/found any older Win AA (if they even made them) or other good quality old school hulls available. And last, if you CAN find the old hulls, good luck finding wads that work with them and available reloading data... It is DEF a challenge.
IF you find a good combo and/or more hulls than you can use, I would always be interested!