14 team PPR- WR/Flex help

[whiteysmit]

14 team Full point PPR, I'm in need of One WR spot and Flex play....I'm looking at
Danario Alexander vs TB
Derrick Mason vs Buf
Justin Forsett v ARZ

Lil up in the air here, I like Danario's upside in the matchup, but feel Mason could be the safer play in a PPR. Could throw the other in the flex, but I also got Forsett as a potential flex candidate as he should get enough touches to be effective against the weak ARZ run D. Any opinions appreciated, Thanks.