I have a Cameo.... and I love it! You can DL for free the Silhouette (Sil) Studio software for free. And each Tues the Sil Store offers a free cut file. Start DL those file if you think you might someday purchase a Silhouette.
I have recently purchased the Sil Studio Designer Edition (SSDE) for just $25 (it was on sale, usually it is $50). The main advantage to this upgraded software is the abiltity to open SVG files.
But the complete advantage of a Sil cutter is the ablility of the print and cut. Totally blows me away each time I do it. Sometimes I just don't want to paper piece each thing.
I need more ink for my printer.
I bought my Cameo from Oh My Crafts, for $205-ish, you can use their coupons/code for the Cameo even tho the coupon/code says it not valid for the Cameo. I bought mine with a 25% off code.
I wanted to add that you should check out Under a cherry tree blog. She does a GREAT job explaining how to use a cameo. She uses both MTC and the SSDE. She also has a great review of some of the different cutters.
I have not tried to print and cut with SCAL3. but I think it will do it too, but I need more ink ;-)