Cant say definitively how the other competitors fare against LogTen Pro. However, I can say that it has been a godsend, from the way you can log flights, limits, trip pairings, run detailed reports (airlineapps.com, 8710, etc), pilot/aircraft type time, etc. Made my life SOOO much easier. Additionally with cloud syncing I can log the time on my EFB (iPad) or on my iPhone I can expect the times to automatically show up on either device (real lifesaver if I lose one) and I can also publish my logbook via their servers so I can save it to PDF version for my laptop or even print it (in a number of logbook formats).
I really like this product, and its constantly adding features.
Downside? Yes...there are a few areas where I wish they would automatically set up as opposed to having to develop a sub-routine...like 6 months approach currency, PIC privileges (each cat/class - landings, night, etc), and a few others.