It would be nice to find one ereader app to stick with, but it seems it might depend on titles availability. (slaw.ca)
To maximize title availability for users and ROI for libraries, OverDrive already supports multiple access models, including Cost - per - circ, Simultaneous Use — from a growing list of suppliers — and Classroom Sets. (goodereader.com)
The library staff were only told this was happening * after * OverDrive got called out on the differences in title availability. (theanalogdivide.com)