Dan, I have a older version of BobCad V19 and it works ok for some things but can't do all the functions on my control without tweaking things some. I have their newer 2007 (V22?) but I hate it and wasted my money on it. I'm just an old dog who's processor can't take in much more info
As far as hours, who's counting. I'll be going into my 9th year soon. I did keep some track of the milling of the bigger walking parts and it was around 100hrs.