I used Aqua Pure. I'm a DIY guy so they were happy to sell me a commercial grade dual tank unit and deliver it to me do my to install. However they do installations as well. I'd call them. On the OB you can find the user that works for them.
Can't do any better than Kinetico. Had one installed in Manvel for 15 years on well water. Did some research and generally learned most brands may be okay on city water but well water was tougher. Never did anything but add salt. Had another brand when we moved to Canyon Lake nine years ago. Had problems with it so replaced with Kinetico based on previous experience
If you're pre-plumbed and on city water, buy some Sharkbites and an Aquasure Harmony system and install yourself. SOOO much cheaper and a very fun and simple DIY project. Just finished installing mine.