Jeff: For your use I don't think you will need the Pro versions of CircuitMaker or TraxMaker. And you can purchase the regular versions from Jameco for about $280.00 or so each, much cheaper than the $1500.00 or so for the Pro versions. The only real difference is that the Pro versions have a lot more devices and a few more test simulations geared mostly for the more serious minded professional. I love my CircuitMaker and TraxMaker and have found very few bugs in the software, however like all packages there are a few but nothing that really causes me any serious problems or that I can't work around with pretty much mimimal effort. Randy A.