I dumped signal less over the data collection they've started doing and more for the fact that they've been less than transparent about it. Nearly a year ago their forums were filled with objections, security concerns, and questions and for months they went ignored. When they finally made setting a pin optional they were equally unclear that it would just set a random one for you and that this didn't prevent your data from being uploaded to the cloud.
I took it as a sign that they were telling us not to trust them as clearly as they were allowed. For secure communications I'm using Jami now and I've been very impressed. For SMS/MMS in general I'm still looking. I've tried a few alternatives and frankly I'm not really happy with any of them.