Some quick thoughts regarding the interface on these 2 programs. Pro Tools is probably the "industry standard", and you don't hear much about Traktion. I use both - Tracktion in my home studio, and Pro Tools LE at the college where I teach, in the piano studio.
Now, I used Pro Tools waaaaay back in the mid-90s, so I've watched it "grow up". But still, I find the Traktion way of doing things much more intuitive. Not having to switch screens to mix or edit really helps my workflow as I'm mixing, whereas Pro Tools requires a switch back and forth between editing and mixing.
To insert a plugin - in Tracktion you drag it down to the track - in Pro Tools you have to insert it into an aux bus on the mixer. This means that if you're in the middle of editing a passage and decide to add a plugin, you've got to leave editing, switch to the mixer, insert the plugin, yadda yadd yadda....
So does Pro Tool 8 still bounce tracks in real time? NO! That means that it takes 45 minutes to bounce down a 45-minute track. Tracktion's bounce speed is limited only by your computer system, not the second hand.
Still, Pro Tools is a good thing to know. I still like Tracktion better (and I get more work done faster with it).