I just spent about an hour installing a zBOOST YX510 and I'm really happy with it's performance. I had NO cell service inside my home. Had to go outside to the end of the driveway to make a call. Outside i would get 1 bar, 2 on a good day. Now anywhere in the house I get 2 to 5 bars.
It takes a liitle trial and error to find the right location for the base unit, but once you find the "sweet spot", you are good to go. I ended up with the base unit in the attic and the signal antenna outside, mounted on the edge of the roof. The box came with everything needed and clear easy to follow instructions. If you are having in-house or office reception problems, give the zBOOST a look.
Mike
P.S. I got mine from Amazon for a good price.