I see you found SizeUp. That's also my application of choice. But it doesn't look like you did a lot of research into the available choices, or at least didn't bother listing them. Here's but a handful, for others who are interested:

ShiftIt: https://github.com/fikovnik/ShiftIt

TileWindows: http://www.carsten-mielke.com/tilewindows.html

Mercury Mover: http://www.heliumfoot.com/mercurymover/

... Or if you like mouse control of window placement:

MondoMouse: http://www.atomicbird.com/mondomouse

Zooom/2: http://coderage-software.com/zooom/index_green/index.html

Cinch: http://www.irradiatedsoftware.com/cinch/

... Or if you like a bit of both keyboard and mouse:

Optimal Layout: http://most-advantageous.com/optimal-layout/

Arrange: http://www.trifle.pl/arrange.html

Divvy: http://mizage.com/divvy/

BetterTouchTool and BetterSnapTool: http://blog.boastr.net/

Flexiglass: http://www.nulana.com/flexiglass

Moom: http://manytricks.com/moom/

And throwing this one in to just show that it can get exotic:

http://infinite-labs.net/afloat/

.... I could go on. OS X does not lack for people who disagree with Apple's idea of window management. There's lots of tools out there, if you just look for them :)