I too started by using Benbox and very quickly found the limitations. I then tried EleksCAM, T2Laser, BenCutLaser and RobotLaser.
I settled on T2Laser and have not regretted my decision based on a few factors.
First, EleksCAM (at the time I had tried it) was very buggy. It has improved a lot since then, but I am already settled with T2. BCL was great, but did not offer all of the options I needed at the time (they now do)
Second, T2Laser has many users and a VERY active dev. @Zax has replied to EVERY question I have ever asked him in the two years I have had my machines. Also, the fellow users have provided additional information and assistance that I have not found in ANY support staff EVER.
Third, @Zax listens to his users. If you need T2 to do something, he works with the community to find out how to make it happen or he will find a way to incorporate it into the software to keep people happy.
In my opinion, T2Laser is very much worth it. After a bit of a learning curve, you will very happy with your purchase.