If there is a demo of any program out there, I’d recommend that you try it. Well try it if it’s a program you may be interested in using and a program you feel can help you out. I usually use a trial period or a demo of any programs that require me to buy it. Before I bought myself Photoshop CS2 I used the 30 day trial period Adobe has given me.
I have always liked products that give you a trial period before you buy them. This gives you the opportunity to try it before you do anything else with it. If you don’t like the program, you don’t have to spend your money or waste your time downloading the real thing or going to the store to get the CD. Just saves a lot of time if you ask me.