Yes, I prefer paper. There's nothing easier than turning up for a gig and you're given a sheaf of numbers, mostly in set list order. I've got a CD, priceless to me, that has at least eight real/fake books stored on it. I use this for home study and there was a time when I attempted to make a condensed file of the numbers I thought might needed on the gig. This didn't always work because, playing with all sorts of musicians, you can't anticipate all the tunes. And, shock horror, a lot of people refer to play in 'their' key rather than the written one.
But I'm beginning to find it more useful to take an iPad to any gig I do, most of them as a freelance. iRealPro has 1300 jazz tunes stored and although I play stuff mainly by ear or from memory there are times when you need to ref that elusive chord that starts the middle eight, for instance. And it transposes into any key. And I find it easy to read, it's back lit.