it's the only software I've bought in the last 20 years.
And yes it is worth it. was only £70 something when I bought it.

Been using just over a year. I held out till I could see it in action. Did that at tct 2014 - poppy from the 3dp unlimited guys gave me a comprehensive run through. Bought it the next day.

Winged continuously about the crapy infill for about 9 months. They fixed that with version 3.0
And My only current complaint is how shite the dual extrusion still is.
It's supposed to print a wiped barrier round the print. But only seems to start that on the second layer. Now on a 3 layer print. because the unused head isn't being wiped the first layer gets printed with a semi-mirror image by the second head.

So I'm going to have to go back to makerware.

Pretty sure it'll get fixed in a future release.
But even with that - it's definitely worth the money. :-)