I've used both LogTen Pro and Logbook Pro--both are good. To me, LogTen's interface, syncing, and reports are what set it ahead of Logbook Pro.
What I haven't found (yet) is a binder that doesn't look like some godawful high school arts and crafts project. All of the binders I've seen are cheap leather, with tacky gold trim; it more or less looks like someone went to Staples, bought a $35 chart case, cut it up, and turned it into an electronic logbook binder.
The only binder that ever caught my eye was the NC Old World binder which, for whatever reason, they opted to stop producing.
Throw some 35/40lb eggshell/tan paper in the printer, get Kinkos to cut and punch the paper, and it's a done deal.
I almost threw up.
Export it all to PDF's. merge the files; print at FedEx Office with binding and covers. Cheap and easy with logbookpro. My nephew did it, made his own fancy cover page, TOC, several of the reports, then the detailed logbook. Even imported a signature file that signed all pages.
LogbookPro impressed the folks at B6.
He's applying to Delta. Finally realized Blue isn't a final career stop either. Regional style retirement and almost worthless health insurance. With no union on property it really is mercy of management who have been giving themselves 24% to 66% raises.