About your mouse, I have been using the logitech mx revolution for quite a while now, and I really like how ergonomic it is. Its a joy to use, especially if you use it for longer periods.
On another note, I understand if you are reluctant to talk about it, but i wonder how significant your donations is, compared to what you get from Machinima? If your just getting a couble of bucks now or then, or if it really makes a difference. I made a donation (however small) myself, and hope that the donations help you in the making of new videos, and buying new equipment.