No attic installations: they are almost always fraught with problems: The C2 and C4 do NOT do VHF, so don't bother. If you don't want to get up on your roof use an eave mount, which will allow you to mount on the side of the roof, with the antenna still seeing over the highest part of the roof. Always make sure that your antenna is above any other roof obstructions, and is mounted as high as possible for the best reception. I strongly recommend against mounting anywhere below the highest point of your roof, as you will block signals and create a multipath condition. Remember, OTA TV is NOT satellite reception! Your antenna needs to be in free space, up high and clear of any obstructions around it to work at it's best. You can eave-mount an antenna easily, and have it clear the top of your roof by several feet, which is all that you will need to be successful.
Look at this eave mount:
http://www.solidsignal.com/pview.asp...0Supplies&sku=