I used the ameda mya and loved it. Exclusively pumped for 13 months. The size is great and I could throw it in a purse easily when I had to pump on the road, at restaurants, or even on planes. Might not be as convenient as wearable breast pumps, but with the hands-free pumping bra it was totally fine.

Edit: Looking back, I think the Joy might be new? I used one that was just called Ameda Mya (portable, hospital strength)not sure how different they are.