Track saw is unbeatable for panel break
I think track saw is better than a power saw and a guide for every activity associated with a panel break. It will be faster to setup and probably more precise at most situations also.
On the other hand the traditional power saw is more convenient to work in Carpentry than a track saw for most activities.
The question is if a track saw is worth for you. It will depends of a lot of variables including your disposable cash, how frequently you need break panels, your preference for generalist against specific tools, and so on.
Personally I stay with my power saw and a heavy duty aluminium L guide I use for 26 years. I love to have multifunctional tools and breaking (at average) just a couple of panels per year I cannot justify a track saw to myself.