We use a lot of Tecnifibre string, including the X-One Biphase and NRG2. The Tecnifibre synthetic gut is a solid choice for a synthetic string whether you use it as a full setup or hybrid stringing job.
I tried various types of strings since I started to play tennis. I had tried the super expensive and the relatively inexpensive strings. The Technifibre Syn Gut is by far the best strings. I mixed this string with the Prince Syn Gut strings to get the power and touch combo that many intermediate players like.