If its $200 you want to spend, I will offer you two choices:
*CDT CL61A 6.5" comp set...$149 from www.thezeb.com
*CDT EF61 6.5" comp set....$179 from DJDilliodon over at the Sounddomain forums. The EF series is a step up from the CL series.
With these comp sets, you dont need to worry about any rear fill, they will give enough staging by themselves.