Best third party product to generate Excel reports.

Question

Hi ,

   I have generated excel reports using microsoft.interop.dll.but we shoud install ms office in server.so i have tried to generate reports using epplus but am unable to generate the report charts as the user requirement(cannot costomize chart series color).so,
know i would like to know
 1.The best third party products that are avilable in market that has all the features as Microsoft.interop.dll has..
2.what products  costs between $200-$500.

 Plz give me quick reply...
Thanks,
kavithak