Need some speaker advice

[cookdiesel]

Long time lurker of this wonderful site and have decided to do some upgrading. I found some great deals on the pieces I have already purchased and I am in the process of putting the final pieces together and thought I should get some real advice on the center channel and the subwoofer.

I have currently purchased:

Onkyo 805
Polk M60's
Polk M40's

Now I need the two biggest parts. I have seen in the different posts about matching the center to the fronts, Polk recommends the CS2, but I see they also have the CSi3 which appears to be decent also, but maybe I need something else.

For the sub I see many different options and suggestions. I don't really want to break the bank on the sub and I was kinda leaning to the JBL sub12, but it appears to me that everyone here likes the BIC Acoustech H100. Is this a good sub for the 200+ range? Is there something better?

Any options and suggestions would be greatly appreciated. Thanks!