I bought this machine mainly for use with other manufacturer's products - cuttlebug, nestabilities etc. It has worked perfectly with a variety of embossing folders, dies and stencils and cuts and embosses card, acetate and various other media very well, though some adjustments were needed to the 'sandwich'.
Instructions quite good and plenty of on-line help when using with material from other companies.
The machine is attractive but bulky and needs quite a lot of space to store - not so good if you don't have a dedicated craft room. It is sturdier than the cuttlebug and takes heavier materials, but doesn't fold up for storing, which is why it got 4 stars, not 5.
I think if you need to cut heavier items and slightly wider ones (it is about 1/2" wider than the bug), pick the sissix machine, othewise the similarly priced cuttlebug is just as good and much easier to store.