The Avenger is a bad disc for newer players. It's going to frustrate most people, as it will turn hard left as soon as it leaves your hand, and won't fly as far as a "fairway driver" unless you are already throwing 400ft.
Stick with an XL or Cyclone in Discraft, Cheetah or Gazelle in Innova...or better yet throw a midrange for several months. For a long time, I threw midranges farther than I could throw drivers...with MUCH more control.
And to start things off, use the basic plastics...like DX Innova or Pro D Discraft. They are cheaper, they will fly like the charts suggest they'll fly, and as they break in they will get better. If you play long enough, you'll lose, and find, a number of discs. Try them out and experiment. But don't get hung up on buying the newest mold in the newest plastic. I've been down that road. Not only is it expensive, it messes with your throwing technique. I wish I had a place like this to get advice and info from when I first started. So I basically started over last summer. I had stagnated...wasn't getting any better. My drives were maxxed out at 250'. I was throwing every long range driver I could get my hands on, and kept going back to my midranges. Last summer I took a lot of info from this site, and applied it to my practice throwing sessions. I'm still bad, but i now throw over 300', with some semblance of control. And I've given up on buying every new disc that comes out. I've played with a bag stuffed full of drivers....15 or more drivers, and a couple of mids and putters. It's crazy. I've retty much narrowed down my discs to Valkyries, Sidewinders, Buzzzzs and Wizards...with maybe one or two overstable drivers like a Surge or Wraith. I still don't throw a Wraith like it's intended. I use it for dogleg lefts, or sidearm for rights.