I switched when TextSecure dropped SMS encryption and have been happy with my choice. The encryption works almost transparently and there have been no dropped or delayed messages like TS push messages. Sometimes  if the SMS messages making up an encrypted payload arrive out of order  SMSSecure can't decrypt it. However  my biggest issue has been that on Republic Wireless  I can't send MMS group messages using SMSSecure. I'd like to convince my family to encrypt  but I can't expect them to deal with that.
May 28 2016