In June of 2000, we used Professional Window Tint of Dallas (Phillip Roberts) ###-###-####. The brand we used is Panorama.
We chose window tint because it does not change the look of the windows from the street. In my opinion, the solar screen are much more noticable, therefore to be consistant you need to do all of the windows and with tint you have an option if you only need to work with a few windows vs the entire house.
I had all of my windows done and the cost was about $2400. I am pleased with the job they did. We had 1 window develop some bubbling and they came right out, well after the initial install and re-did that window at no charge. I also had a window replaced and in that case the tint was not under a warranty and he only charged me $60 to redo that window.
Overall we are happy with the quality of work they did, happy with the window tint and the benefits of tint. I really do not notice the tint unless I raise a window and see the difference OR I am outside in daylight and cannont see in my house. I like being able to go to the door and no one knows I am looking to see who is there unless I am very close to the window.
As far as lowering utility costs, I don't think it does that much on its own. We got the tint to protect furniture, flooring and to aid with electricity savings. We do not have any windows which are directly affected by the morning or afternoon sun. Our cooling system is electric so about now through October our electric bills are $300-$800. We have not seen a big change in our electric bills at all since we built and moved in 2000.
Hopefully that helps. Susan
PS: I noticed the comment about the tint voiding warranty. In my case, it did not but you might want to check your warranty first.