In my experience there is no such thing as a 'free' or a 'home' version. Debut Professional has a fully-functional 14-day trial period and after that it will not work at all until you buy the licence. That is my experience, after using Debut for quite a number of years.
If anyone knows any different I'd be glad to be educated.
I would strongly advise you to take full advantage of the trial period, testing as many features as you can, as there can be bugs needing to be ironed out and Debut Support is responsive to prospective licence purchasers. If you buy a licence and find a bug too late for the licence to be valid for a later, ironed out version, you can be stuck with the faulty version. It happened to me with the first licence I bought (1.61), and several versions I've tried have been buggy.
Having said that, Debut is one of the better screen-capture programs, which is what I use it for, and it's worth persevering to get any problems fixed.
