Flex(s) Question

Afternoon All,

Current lineup is:

QB Carson Palmer
RB Ty Montgomery
RB Shady McCoy
WR Amari Cooper
WR Brandon Cooks
TE Delanie Walker

We have 2 flex spots in the league.

I currently have in the Flex Jarvis Landry and Jeremy Maclin.

I’m pretty set on Maclin but can’t decide who to start in my second flex spot.

I have to choose from:

Isaiah Crowell
Jaquizz Rodgers
Pierre Garcon
Terelle Pryor
(and Landry as above)

I also have Paul Perkins and Chris Johnson but not going to be starting them.

Who do you think i should have in my flex(s)?