If you are the type of viewer who enjoys fast-paced action, bubbly and/or quirky characters, romance, cool depictions of violence or just a happy ending, then Texhnolyze is not for you. This anime does exactly the contrary to everything listed before: is cold, slow, realistic, challenging and the ending may leave you with an empty or bittersweet feeling.
Personally the first time I watched it, it left me confused and to be fair, I didn't payed the attention I should have and even a year later, it left a huge impression on me. After the second watch everything is more comprehensible so I can say a couple of things to be considered if you decide to give it an opportunity.
Even if the first episodes seem slow or too abstract, none of them are fillers, events that will have an impact at the end, start from the very beginning but the anime doesn't care to explain to you how or why.
This story is rewarding if you reach the ending, the message is clear and it doesn't leave you with an ambiguous interpretation, but it's your work as a viewer to pay attention, because the exposition is not spoon-fed to to you, but don't misunderstand me, it is not hard to understand it either, the dialogue chooses to be poetic or figurative at times.
I may say that the story of Texhnolyze is focused on the search for the meaning of life on an individual and collective scale, you should watch it if that's something that sounds interesting to you.