I've used Lightworks since about 1990 until just a few years ago when I swapped to Avid. I don't know about the beta version but it was always the fastest and simplest system available, due to the way the trimming was implemented and because it had a "console" with a Steenbeck like controller and dedicated buttons. It wasn't free either, the first system we bought around 1990 was GBP 46,000.
The company went through some disastrous buy outs in it's history which prevented it from competing successfully with it's competitor Avid, which in those days was the corporate equivalent of the Black Death. An Avid system then cost exactly the same as Lworks, and both systems came with specialised hardware, now Avid is around GBP 2,000, software only, and the company has a little more humility.
Try the beta, you may like it, although without a console it wouldn't make sense for me. The system never conformed to a standard user interface, the original Lworks ran on DOS and owed nothing to Windows, so some new users find it awkward. I, like many, found it better than any GUI before or since.