I've got one and I love it. It's fantastic for text stamps. I love being able to make text or quotes suitable to go with other stamps I have.
Getting art work suitable for making in to stamps can be a little tricky. I'm not an artist and I don't draw. Finding suitable art work and converting it to a negative could be a problem if you are not a dab hand with scanning and something like photoshop. Text is simple using word.
I bought massive pack of transparencies (I use a laser printer) to print the negatives on direct from xerox which worked out cheaper than buying the imagepac ones.
I give this system a definite thumbs up.