I'm like Chris B above--have tried various replacement apps for SMS, calendar, etc on my N3 and S5, but always went back to stock. The others may be prettier,but the stock applications provide some functionality I didn't want to lose. When I got the N4 I just stayed with stock. There are lots of tiny detailed functions in the stock apps that you lose with 3rd party. Many I didn't know about until I went thru some of the Tips and Tricks videos for the various phone models on YouTube. Those videos are worth the time. Many are repetitive, but I pick up a new tidbit from each one.
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