First of all, 1Password 3.8~ rocks, seriously. I have always recommended it to any and everyone with a Mac, sale prices or not.
AgileBits has been great in providing quick turnarounds to issues and browser compatibility.
That being said, it seems like through the last full version number features have tended to go away over time. The iPhone app used to switch to the browser and plug in the password for you - now you have to do it manually. The bookmarklet is good but it has to be updated manually (who of you remembers to do that regularly?). The plugin has broken working features quite a few times over the 3.x cycle (HTTP Auth still doesn't work).
Now because they inexplicably want to go App store only, they are "forced" to remove STILL MORE features and give us no other option. Their support/updates/turnaround time will drop off dramatically.
I'm not impressed at all, and not likely to upgrade. I don't see a better product in the future, with the path they're taking.
My opinion, FWIW.
"You have the whitest white-part-of-the-eyes I've ever seen. Do you floss?"
Get Dropbox. You need it!