I use AntennaPod on Android almost exclusively. It has some Podcasting 2.0 features, like chapters and art, but no V4V features yet. I use Fountain if I want to send boosts, but listen to everything in AntennaPod. The last time I tried to use Fountain for listening I found way too many buggy and/or frustrating things, like it not responding to the Bluetooth controls in my truck and starting up at some random position in the show whenever I stopped and resumed listening later. The V4V features are great, but the rest of the experience was just terrible.