Any time you place an antenna of any type in an attic, you are venturing into the unknown. The differences between one attic and another is often quite surprising. It's not reasonable for any of us to predict how your attic will serve as an antenna site. Also, consider the effect weather will have... A wet roof will impact your reception, and a load of wet snow will be even more troublesome.
If you go with the C2-V outdoors, it should do quite well, with the exception of WOCK
http://www.rabbitears.info/market.ph...n=WOCK#station & WKQX (which is now available on UHF, real CH-33).
If there is any possibility that you will mount outside, I would strongly advise against the LNA-100... It's not designed for exposure to the weather.
If you need any amplification (
http://forum.tvfool.com/showthread.php?t=13646), a traditional distribution amplifier such as the
Channel Master CM-3410 (AKA, PCT-MA2-M) would be my choice. It too should be mounted in a protected location, but it is about half the cost of the LNA-100 and has a proven ability to handle a mix of strong and weak signals without overloading. If you need an amplifier, it will be most effective when located as close as possible to the antenna. The CM-3410 can be powered remotely if needed, with the addition of a power inserter,
PCT-MPI-1G