This is a very interesting post and question. I spend time on forums for Accordance, BibleWorks, and Logos (in that order--mostly here), and I notice that in each place there are users who only use that one software and only ever want to use that one software (I think of Julie here, whose posts I really enjoy). The benefit in that is that (I'm convinced) there are "powerful" (common word in Bible software ad copy, I've noticed) things that each software can do, but that you really have to be a somewhat advanced user to know about or take full advantage of. Not that those things aren't intuitive in Accordance, but study of the program is repaid with a greater ability to do multiple things with it.
I use Accordance the most of three Bible softwares and have begun trying to unload those few BibleWorks modules I have in order to replace them in Accordance--I don't think of this is a "loyalty" issue (I think BW is great--interface notwithstanding), just a practicality for me. I'm on a Mac more and more these days, and Accordance is my favorite engine for the Mac. (BW still has some work to do on their Mac Public Preview.) There are advantages to paring down and really focusing in on one software.
That said, even if Accordance outperforms Logos for Mac, it remains true that there are commentaries or books that I want in electronic format that Accordance doesn't have, so I feel no compunction or lack of loyalty in getting them elsewhere, as I'm able. And there are a few things those other two Bible softwares can do that Accordance can't--and vice versa.
I think, too: we wouldn't probably talk about "loyalty" to Amazon Kindle vs. "loyalty" to Adobe Digital Editions, etc. Sometimes it's just the functional issue of where can I get a book in digital form, or what I need to be able to accomplish with the Tov-Polak MT-LXX parallel, or whether I want to read (not just export) unpointed Hebrew, etc.
So I'm not sure what reward there is in loyalty itself--especially since there's a price tag associated with it, and one can only be "loyal" to the extent that one can continue to pay for the program, additional modules, updates, etc.
But to your first question--I have experienced an even greater appreciation of Accordance as I've made a decision (after reviewing it) to make it my primary and first-use software.
When I first downloaded and reviewed Accordance 10, I wrote glowingly positive reviews, which were easy to do, since the interface, usability, speed, functionality, etc., in Accordance are so great. If I had an unlimited budget, I'd download every module I could from them!
Edited by AbramKJ, 25 February 2013 - 11:59 AM.