For me that is a tough question but, I tend to always use the YTTV app.
I think both apps offer very similar picture quality but, I would give a slight nod to the ESPN app. My problem with the ESPN app is that it takes longer for each stream to reach it's best quality when it starts up and I get a whole lot more buffering when using the ESPN app. I rarely ever have buffering problems with the YTTV app and the streams start streaming immediately and at their best quality. I don't know why the ESPN app can't get this part right (and it's not my ISP, I get on avg. 900-950 Mbps up/down every time I do a speed test and our Apple TV uses a wired connection to the router).
The thing I really like about he ESPN app is the ability to stream 4 games at one time. I'd use the all the time for this feature if it wasn't for the buffering issue.
I think both apps offer very similar picture quality but, I would give a slight nod to the ESPN app. My problem with the ESPN app is that it takes longer for each stream to reach it's best quality when it starts up and I get a whole lot more buffering when using the ESPN app. I rarely ever have buffering problems with the YTTV app and the streams start streaming immediately and at their best quality. I don't know why the ESPN app can't get this part right (and it's not my ISP, I get on avg. 900-950 Mbps up/down every time I do a speed test and our Apple TV uses a wired connection to the router).
The thing I really like about he ESPN app is the ability to stream 4 games at one time. I'd use the all the time for this feature if it wasn't for the buffering issue.