Click here for a topic previous, though its an internal aerial, it out-performs most outdoor aerials, and I've recommended it to many peeps over the years, and never had anyone say it did'nt meet their needs. It was rater top, by a good margin, in the Ricability indoor-aerial tests they performed for Digital TV UK, scoring 96% overall (funnily enough, the un-amplified version was the second best, with 88%).
If it does you, it will be far far cheaper than an outdoor aerial and installation. If not, send it back and go for an outdoor one.