I think it's the best there is - 80% of it is printed by itself!
Since day one 3 months ago I've been using the Tax 6 every day and it never misses a beat - I use it with S3d not Cura which is just preference - works just as well with Cura but you don't have as many choices in terms of customizing settings and materials. Going from complicated design to reality in minutes is just awesome from an engineer's prospective. It's all open source too - the company publishes all the printed part designs and other manufactured parts as well as software and firmware... so you could build one yourself if you wanted to! IMO it's worth the extra cost to own one.