Wow, thanks for all the informative feedback guys. So answer this for me:
The vast majority of my work is with SD, HD, and occasionally Super 16. I also like to collect old cameras and such. Anyway, would it be rational to buy an Arri 2B-BV (model with the variable shutter), have it modified by Aranda Film Group in Australia to 2 perf techniscope, have the turret mount removed and replaced with either a hardfront PL or BNCR mount, add a Visual Products video tap, and a Thoma crystal motor? It's primary functions would be mostly for commercials and music videos as well as just playing around and occasionally shooting some obscure artsy short films. I don't intend for the footage to be projected in a theatre via a 35mm projector. I've chosen the Arri 2B-BV for the fact it has a variable shutter (which I've been told the popular 2C does not), is somewhat inexpensive, simple to operate, and should be easy to fix/repair/modify. I like 2 perf techniscope because it saves film and is widescreen. I've learned from my past two music video experiences that having a variable shutter and a camera that can shoot at least 40fps for slow-mo is a real must, not to mention widescreen seems to be popular as well.
So does my idea seem rational in what I'm saying here, or do I need to examine other avenues/ideas?
Thanks again,
Joe Walker