Which game should I get?

Homefront is pretty bad, don't pick it.

I would say Chaos Rising.

Homefront is exceptionally mediocre and Chaos Rising has a better campaign than Dawn of War 2.

you're a potato why do you want to play something? Wait for the summer sale and buy something really really cheap.

RTS games suck so i'd say get homefront but that sucks too according to some people so you might want to reconsider and get something other than those you mentioned :).

Hello potato! anyways I would say Warhammer 40K: Dawn of War 2 since I would say Homefront is really just average, nothing really that special, and it would be great to experience the Dawn of War 2 games in order, perhaps you'd be able to get Chaos Rising later. As always I'd reccomend some gameplay videos :)

DAW2

btw, are you a wooden potato?

Avoid Homefront

how come you can get one for free? :)

Homefront is like HIV, you really don't want it!

If Chaos Rising is standalone, get that, otherwise, get Dawn of War 2 base. Awesome franchise, good RTS, not as good in traditional strategy as the original Dawn of War but a fun squad based RTS none the less.