Hi there! i am Andreso and i’m going to tell a little comparative made entirely by my opinion of these 2 video editors.
Sony Vegas: It’s a very complete video editor capable of a lot of stuff if you know it up to down, it’s easy or hard depending of your experience and what you gonna do with it, has A LOT of features and interesting things.
Camtasia Studio: It’s a very good editor if you wanna something a little bit more simple, YES, you can do very professional works on it if you know how to properly use it, but doesn’t has that lot of features that offers you Vegas, but is good if you don’t wanna puke because the things that are a little bit more complicated on Vegas and you want do things easily and quickly.
I first used Camtasia Studio, i learned very well how to use it and was easy, but my PC is very weak and the slow that ran Camtasia on it was the reason why i migrated to Sony Vegas (specifically Sony Vegas Pro 9), my first impression was that is very confusing with that huge amount of functions, it scared me at the start, i was very nervous about if it was going very hard to use, but i’m handling it very well, still i don’t have the same experience i had with Camtasia, but Ok.
So, if you don’t need to do a lot of things with variations of effects and/or a very professional edition work and you only want to do a work easily and simpler, use Camtasia Studio, but if you wanna do more variated things, professional edition or just having more freedom to do anything you want, use Sony Vegas.