To me, MusicReader is no good. Over the years, I exchanged emails with the programmer of MusicReader. I downloaded it just now. Still the same issues. The same PDF file that looks so clean in any PDF viewer looks blurry in MusicReader. Also, you lose quite a bit of space in MusicReader, and it is not as easy to handle the music as it it is in any PDF viewer.

At home, I'd rather use any PDF reader and a Bluetooth page turner for practice. It is a shame that there is not a single good sheet music viewer for Windows. Even people with an iPad viewer like me or Android are likely to have a or two Windows machines. I'd say the market is big, but no good supplier.

If a person doesn't use music apps, I'd go for an inexpensive, large screen Android tablet.

I think I spoke too soon. Just found out that MobileSheets is also available for Windows besides Android. You can find it in Windows app store. It's only $12,99. Usually desktop versions are much much higher. 15 day demo version, too. I downloaded it just now. It looks very clean, and doesn't waste any space like MusicReader.