Sunday Books Revisited

This is taken from an older post. New material is in blue.
On Sundays, (and that means from Evening Prayer 1 to Evening Prayer 2), I put aside whatever non-Catholic book or books I may be reading. On Sunday, I read only Catholic books.
The books can be fiction or non-fiction, but they absolutely MUST be something I'll want to carry into the next week. Dull, dry books are NOT welcome!
This may seem like a restriction, but it is actually an enhancement of the most beautiful, precious day of the week. And, as a bonus, I find that I enjoy the non-Catholic books all the more for having put them aside for a day.
I stopped doing this for awhile; that is, while there were some books I read ONLY on Sundays, I decided that any good, wholesome book was suitable for Sunday.   Now, however, I've decided to go back to reading ONLY Catholic books on Sundays.
I'd like to make it clear that I do not consider it a sin to read non-Catholic books on Sunday.  This is a matter of personal preference.