I built my own machine. Downside, I guess, is that it cost nearly as much as the Acctek although I could have cut that by buying more from China rather than UK. Upside is that "it is all my own work", bigger cutting area than the Acctek (1500x750), twin rather than single X ballscrews, better electronics, etc. I built it over a year or so, but it wasn't exactly a full-time job - apart from anything else, I always seemed to have a list of of jobs to do on the mk1 router! Which is why I needed something bigger and faster. If you need it for your business, you have to weigh time to be up and running and working more productively against the other factors; as a purely hobby user part of the fun for me is to be able to say "I made it myself - and I also built the machine that made it!" The satisfaction of taking a pile of steel, electronic black boxes, a bunch of software, and assembling it into a functional machine (and learning a lot on the way) is immense, but it doesn't pay the bills!