Good Contacts/Texting app with 6.1

[Supermanwoot]

I have been using PocketCM, but with 6.1 I am having issues with it: extremely slow conversation loading and hang ups.

The OEM threaded SMS is nice, but seems to be a little slow on your keypresses to displaying the letters on screen. Kinda annoying.

I like the pocketCM for contacts though, the built in contacts manager is terrible. However, if there is an app that works well and does both texting and contacts I would gladly replace it.