Looking at digital editions

A press release in my inbox tells me that PennWell will begin publishing digital editions of four B2B magazines -- Laser Focus World, Cabling Installation & Maintenance, Industrial Laser Solutions and Vision Systems Design -- through Texterity.
And a quick visit to Texterity's site shows me the company has collected a slew of customers for its service of rendering print editions into pdf-like versions for the Web.
I've said that I'm not crazy about digital magazines. I prefer that people repurpose their content for the interactive medium of the Web. Nonetheless, publishers do seem to like these things. And now it's possible to get audited numbers for digital editions. So I suspect the popularity of these products will grow.
Given that, I have to say that I prefer the products created by NXTBook to those of Texterity. I just really like that audio file of a page being turned when I move through the "magazine."