I specifically bought into the Nespresso ecosystem after swearing off k cups based on some of the same research. I don't really have access to composting so this is the best solution available to me.
Nespresso gives you either a return to store or a pre labeled UPS return bag each time you buy pods. I now own two machines and take one with me on longer road trips.
Nespresso is also trialing a coffee pod made from coffee that is completely compostable. I wish more products were designed this well and I wish plastic K cups would get the ban they deserve.
Most of them are still plastic and the coffee grounds end up in a landfill or worse, down the drain, way too often.