Post Apocalyptic film success

This is the IMDb statistics that I found telling me the box office numbers for each post apocalyptic film I am looking at. This helps me as the film that made more money will be the one that audiences enjoyed the most and that I should use to take inspiration from.
The book Eli

Box Office

Budget:

$80,000,000 (estimated)

Opening Weekend:

£1,232,001 (UK) (15 January 2010)

Gross:

$94,822,707 (USA) (7 May 2010)

The road

Box Office

Budget:

$25,000,000 (estimated)

Opening Weekend:

$1,502,231 (USA) (27 November 2009)

Gross:

$56,692 (USA) (11 May 2012)

28 Days later

Box Office

Budget:

$8,000,000 (estimated)

Opening Weekend:

£1,500,079 (UK) (1 November 2002)

Gross:

$45,063,889 (USA) (24 October 2003)

I am Legend

Box Office

Budget:

$150,000,000 (estimated)

Opening Weekend:

$77,211,321 (USA) (14 December 2007)

Gross:

$256,386,216 (USA) (4 April 2008)

Maze runner
Box Office

Budget:
$34,000,000 (estimated)

Opening Weekend:
$32,512,804 (USA) (19 September 2014)
Gross:
$102,413,606 (USA) (23 January 2015)