Neal or Houston?

Coming into the semi-finals of my playoffs, could use any and all advice to weigh against the rest...

Scoring is tackle heavy - 1T/0.5A/2S/3INT/1PD

We have 2 IDP FLEX spots total

My IDP corps is Jamie Collins, Keanu Neal, and Justin Houston. I'm trying to decide if I should keep all three or drop Houston for somebody else.

Match-ups are:

Week 15
Collins @ BUF
Neal vs SF
Houston vs TEN

Week 16
Collins vs SD
Neal @ CAR
Houston vs DEN

Do I consider Houston over either Collins or Neal in weeks 15 or 16 or should i drop him for a free roster spot?

I'd keep Houston if you think you are an underdog or dump him for someone that will get more consistent points if you are the favorite.

I am currently the top seed left (#2) so I am not the underdog...

Would Jerrell Freeman vs WAS be worth a stash for week 16? Other options in FA are Lawrence Timmons, Preston Brown, and Mason Foster. Thanks!

Yes, I would.