Advice on HDTV Antennas?

[tk2kewl]

I am seriously considering ditching my cable TV since everything on it is crap and it's costly crap.

I run a computer with Windows 7 Media Center and control it via an XBox 360 to play games, listen to music, watch videos etc. The PC also has a tuner card that I can connect to an antenna so I would still get most Sunday NFL games and local news weather - the rest of what I might watch can come from Hulu or Netfix (and if the Mets ever get worth watching, an MLB online subscription).

Anyway I was looking at HDTV antennas and wondering if all rooftop models can be placed in an attic. I see that some indicate use as indoors, some as rooftop, and some as attic/rooftop.

I am trying to understand if one described as a rooftop antenna will function just as well in the attic or if I should pony up extra for one that indicates its for attic/rooftop use.

here a a couple of links to examples:

Rooftop: http://www.crutchfield.com/S-VHKBTwXfgWY/p_6594228HD/Channel-Master-4228HD.html?tp=3261

Attic/rooftop: http://www.crutchfield.com/S-VHKBTwXfgWY/p_792SKY/Mohu-Sky.html?tp=3261

Thanks