jetflite,
I've seen threads along similar lines to this before.
My suggestion is (if you want a sensible answer) to be far more specific in defining what you're going to use it for, where, money available etc etc. There are plenty of ppruners out there who will be far more qualified than myself to answer the actual question but unless you more clearly define the "lefts and rights of arc", you're going to be inundated with information, much of it redundant.
The more information you provide, the better the response is likely to be.
Hope this helps,
P68
