stattonmw,
I use the old Life Link extendable handle, D handle (can use with mittens), and aluminum blade. I like metal coated blades, as apposed to plastic. Even the aluminum gets beat up.
I will check my probe. I think it is a HMK. What ever you get, get a rugged probe, and longer is better than shorter.
I like folding saws with the shark teeth. They can be found fro $20 or less.
More important is to learn as much about snow science, and forcasting as you can. There are some clubs and state snowmobile organizations that offer avy courses for reasonable fees.
Some of the members here sell good equipment that has proven itself, for less than you can expect to pay elsewhere.
Joe