I've tried about 6 and the best one is Fritz. I use Fritz 8. You can probably get an earlier version on Ebay for about $10-20. It's not as pretty as Chessmaster, but both can be adjusted so that it will crush you or you can crush it. It's analysis routine is better than Chessmaster.
Note: Chessmaster causes a lot of crashes with Windows, especially in the analysis mode. If it didn't have this problem it would also be a good bet.
"I've tried about 6 and the best one is Fritz. I use Fritz 8. You can probably get an earlier version on Ebay for about $10-20. It's not as pretty as Chessmaster, but both can be adjusted so that it will crush you or you can crush it. It's analysis routine is better than Chessmaster.
Note: Chessmaster causes a lot of crashes with Windows, especially in the analysis mode. If it didn't have this problem it would also be a good bet."
It looks like the concensus is Fritz. I'll grab it when I can find it. Don't really want to pay anything. Thanks.