Andrew is spot on. DeskProto is excellent for rotary work, especially if the model needs to be true to form and accurately represented. I have the Commercial Multi-Axis Edition, but as mentioned, there is a hobby version as well that basically has the same features for a fraction of the cost...but if you make money with it, do the honorable thing and ante up for the Commercial version. Lex works very hard on DP.
My only wish for DP is a full subtractive preview of the toolpaths, which I mentioned in the past but was told that it wouldn't be possible any time soon. If this feature was present, it would make DP the ultimate software for rotary work, but for now it's pretty close, with the ability to preview the toolpath lines.
FYI - You can try a fully functional demo of DeskProto and cut some files on your indexer for I think 30 days. Keep in mind that the post processor and machine setup may need tweaking to get your posted SBP code working correctly.
-B