That Valkyrie might be a nice longer distance driver for you but if you cant seem to control that one at first then consider purchasing one of the following drivers for control with added distance over the Tee BIrd L. (but rarely more control).
The Road Runner is a great straightish driver that adds distance. The sabre also is nice but it isnt that much longer than the L. The sidewinder is another nice one to consider.
I have a valkyrie, but I seem to like how predictable the TeeBird L was comparitively. I prefered the Eagle to the Valk as well. That said, my very logest throws were with the Valk, but I really liked how the TeeBirds would go straight for a while and then fade at the end. I actually grouped 5 discs the same most times (within around 15' of each other), including the valk, but it just took a weirder way to get there.
I'll look into the RR and the Sidewinder. Btw, I have a Roc and 5 Aviar P&A (bought the extra 4 for practice). I also got a Shark, but I like the Roc more.
Forgot to mention, if you do try throwing sidearm then check out the technique article on sidearm. It gives a great description of the form you should employ. Not trying to convince you to be a sidearmer .... just rambling i guess.
I do throw sidearm and I did check out the technique article on it (as well as others on the web). I use the power 2 finger grip (as opposed to my friend who splays his fingers). That said, I only use a sidearm when I want the disc to curve/fade right. I have not worked on that throw much, but I am pretty consistent with it -- my biggest problem is that I do release in an anhyser release sometimes which makes the disc curve left, defeating the purpose of the throw!
btw, if you are looking to build the most solid all around long run game, i would recommend starting with a slower overstable driver that you can really learn the flight characteristics of and control.
Now I am a tad confused. Should I be using it instead of the TeeBird L (or eagle, or valk, or whatever).
Most of the discs on your list seem to be what the manufactuers and reviews say are really bad for beginners.