Hi, I am looking to buy my first 3D printer, beyond build size, materials, and price what other factors do you consider when researching which brands and models to consider? Should I consider the following criteria: speed, printing technology, company's tech support, warranty, user reviews, reliability, and maintenance requirements? Have you found any sites that are useful for researching and comparing printers?I was also wondering if there was a way to find out the market share in the US of the top 10 desktop 3D printer manufacturers?